Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1 | /** |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2 | * uri.c: set of generic URI related routines |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 3 | * |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 4 | * Reference: RFCs 3986, 2732 and 2373 |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 5 | * |
| 6 | * See Copyright for the status of this software. |
| 7 | * |
Daniel Veillard | c5d6434 | 2001-06-24 12:13:24 +0000 | [diff] [blame] | 8 | * daniel@veillard.com |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 9 | */ |
| 10 | |
Daniel Veillard | 34ce8be | 2002-03-18 19:37:11 +0000 | [diff] [blame] | 11 | #define IN_LIBXML |
Bjorn Reese | 70a9da5 | 2001-04-21 16:57:29 +0000 | [diff] [blame] | 12 | #include "libxml.h" |
| 13 | |
Haibo Huang | d23e46c | 2020-10-28 22:26:09 -0700 | [diff] [blame] | 14 | #include <limits.h> |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 15 | #include <string.h> |
| 16 | |
| 17 | #include <libxml/xmlmemory.h> |
| 18 | #include <libxml/uri.h> |
Daniel Veillard | d046356 | 2001-10-13 09:15:48 +0000 | [diff] [blame] | 19 | #include <libxml/globals.h> |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 20 | #include <libxml/xmlerror.h> |
| 21 | |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 22 | /** |
| 23 | * MAX_URI_LENGTH: |
| 24 | * |
| 25 | * The definition of the URI regexp in the above RFC has no size limit |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 26 | * In practice they are usually relatively short except for the |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 27 | * data URI scheme as defined in RFC 2397. Even for data URI the usual |
| 28 | * maximum size before hitting random practical limits is around 64 KB |
| 29 | * and 4KB is usually a maximum admitted limit for proper operations. |
| 30 | * The value below is more a security limit than anything else and |
| 31 | * really should never be hit by 'normal' operations |
| 32 | * Set to 1 MByte in 2012, this is only enforced on output |
| 33 | */ |
| 34 | #define MAX_URI_LENGTH 1024 * 1024 |
| 35 | |
| 36 | static void |
| 37 | xmlURIErrMemory(const char *extra) |
| 38 | { |
| 39 | if (extra) |
| 40 | __xmlRaiseError(NULL, NULL, NULL, |
| 41 | NULL, NULL, XML_FROM_URI, |
| 42 | XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, |
| 43 | extra, NULL, NULL, 0, 0, |
| 44 | "Memory allocation failed : %s\n", extra); |
| 45 | else |
| 46 | __xmlRaiseError(NULL, NULL, NULL, |
| 47 | NULL, NULL, XML_FROM_URI, |
| 48 | XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, |
| 49 | NULL, NULL, NULL, 0, 0, |
| 50 | "Memory allocation failed\n"); |
| 51 | } |
| 52 | |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 53 | static void xmlCleanURI(xmlURIPtr uri); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 54 | |
| 55 | /* |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 56 | * Old rule from 2396 used in legacy handling code |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 57 | * alpha = lowalpha | upalpha |
| 58 | */ |
| 59 | #define IS_ALPHA(x) (IS_LOWALPHA(x) || IS_UPALPHA(x)) |
| 60 | |
| 61 | |
| 62 | /* |
| 63 | * lowalpha = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | |
| 64 | * "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" | |
| 65 | * "u" | "v" | "w" | "x" | "y" | "z" |
| 66 | */ |
| 67 | |
| 68 | #define IS_LOWALPHA(x) (((x) >= 'a') && ((x) <= 'z')) |
| 69 | |
| 70 | /* |
| 71 | * upalpha = "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | |
| 72 | * "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | |
| 73 | * "U" | "V" | "W" | "X" | "Y" | "Z" |
| 74 | */ |
| 75 | #define IS_UPALPHA(x) (((x) >= 'A') && ((x) <= 'Z')) |
| 76 | |
Daniel Veillard | be3eb20 | 2004-07-09 12:05:25 +0000 | [diff] [blame] | 77 | #ifdef IS_DIGIT |
| 78 | #undef IS_DIGIT |
| 79 | #endif |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 80 | /* |
| 81 | * digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" |
| 82 | */ |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 83 | #define IS_DIGIT(x) (((x) >= '0') && ((x) <= '9')) |
| 84 | |
| 85 | /* |
| 86 | * alphanum = alpha | digit |
| 87 | */ |
| 88 | |
| 89 | #define IS_ALPHANUM(x) (IS_ALPHA(x) || IS_DIGIT(x)) |
| 90 | |
| 91 | /* |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 92 | * mark = "-" | "_" | "." | "!" | "~" | "*" | "'" | "(" | ")" |
| 93 | */ |
| 94 | |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 95 | #define IS_MARK(x) (((x) == '-') || ((x) == '_') || ((x) == '.') || \ |
| 96 | ((x) == '!') || ((x) == '~') || ((x) == '*') || ((x) == '\'') || \ |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 97 | ((x) == '(') || ((x) == ')')) |
| 98 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 99 | /* |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 100 | * unwise = "{" | "}" | "|" | "\" | "^" | "`" |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 101 | */ |
| 102 | |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 103 | #define IS_UNWISE(p) \ |
| 104 | (((*(p) == '{')) || ((*(p) == '}')) || ((*(p) == '|')) || \ |
| 105 | ((*(p) == '\\')) || ((*(p) == '^')) || ((*(p) == '[')) || \ |
| 106 | ((*(p) == ']')) || ((*(p) == '`'))) |
| 107 | /* |
| 108 | * reserved = ";" | "/" | "?" | ":" | "@" | "&" | "=" | "+" | "$" | "," | |
| 109 | * "[" | "]" |
| 110 | */ |
| 111 | |
| 112 | #define IS_RESERVED(x) (((x) == ';') || ((x) == '/') || ((x) == '?') || \ |
| 113 | ((x) == ':') || ((x) == '@') || ((x) == '&') || ((x) == '=') || \ |
| 114 | ((x) == '+') || ((x) == '$') || ((x) == ',') || ((x) == '[') || \ |
| 115 | ((x) == ']')) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 116 | |
| 117 | /* |
| 118 | * unreserved = alphanum | mark |
| 119 | */ |
| 120 | |
| 121 | #define IS_UNRESERVED(x) (IS_ALPHANUM(x) || IS_MARK(x)) |
| 122 | |
| 123 | /* |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 124 | * Skip to next pointer char, handle escaped sequences |
| 125 | */ |
| 126 | |
| 127 | #define NEXT(p) ((*p == '%')? p += 3 : p++) |
| 128 | |
| 129 | /* |
| 130 | * Productions from the spec. |
| 131 | * |
| 132 | * authority = server | reg_name |
| 133 | * reg_name = 1*( unreserved | escaped | "$" | "," | |
| 134 | * ";" | ":" | "@" | "&" | "=" | "+" ) |
| 135 | * |
| 136 | * path = [ abs_path | opaque_part ] |
| 137 | */ |
| 138 | |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 139 | #define STRNDUP(s, n) (char *) xmlStrndup((const xmlChar *)(s), (n)) |
| 140 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 141 | /************************************************************************ |
| 142 | * * |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 143 | * RFC 3986 parser * |
| 144 | * * |
| 145 | ************************************************************************/ |
| 146 | |
| 147 | #define ISA_DIGIT(p) ((*(p) >= '0') && (*(p) <= '9')) |
| 148 | #define ISA_ALPHA(p) (((*(p) >= 'a') && (*(p) <= 'z')) || \ |
| 149 | ((*(p) >= 'A') && (*(p) <= 'Z'))) |
| 150 | #define ISA_HEXDIG(p) \ |
| 151 | (ISA_DIGIT(p) || ((*(p) >= 'a') && (*(p) <= 'f')) || \ |
| 152 | ((*(p) >= 'A') && (*(p) <= 'F'))) |
| 153 | |
| 154 | /* |
| 155 | * sub-delims = "!" / "$" / "&" / "'" / "(" / ")" |
| 156 | * / "*" / "+" / "," / ";" / "=" |
| 157 | */ |
| 158 | #define ISA_SUB_DELIM(p) \ |
| 159 | (((*(p) == '!')) || ((*(p) == '$')) || ((*(p) == '&')) || \ |
| 160 | ((*(p) == '(')) || ((*(p) == ')')) || ((*(p) == '*')) || \ |
| 161 | ((*(p) == '+')) || ((*(p) == ',')) || ((*(p) == ';')) || \ |
Daniel Veillard | 2ee91eb | 2010-06-04 09:14:16 +0800 | [diff] [blame] | 162 | ((*(p) == '=')) || ((*(p) == '\''))) |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 163 | |
| 164 | /* |
| 165 | * gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@" |
| 166 | */ |
| 167 | #define ISA_GEN_DELIM(p) \ |
| 168 | (((*(p) == ':')) || ((*(p) == '/')) || ((*(p) == '?')) || \ |
| 169 | ((*(p) == '#')) || ((*(p) == '[')) || ((*(p) == ']')) || \ |
| 170 | ((*(p) == '@'))) |
| 171 | |
| 172 | /* |
| 173 | * reserved = gen-delims / sub-delims |
| 174 | */ |
| 175 | #define ISA_RESERVED(p) (ISA_GEN_DELIM(p) || (ISA_SUB_DELIM(p))) |
| 176 | |
| 177 | /* |
| 178 | * unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" |
| 179 | */ |
| 180 | #define ISA_UNRESERVED(p) \ |
| 181 | ((ISA_ALPHA(p)) || (ISA_DIGIT(p)) || ((*(p) == '-')) || \ |
| 182 | ((*(p) == '.')) || ((*(p) == '_')) || ((*(p) == '~'))) |
| 183 | |
| 184 | /* |
| 185 | * pct-encoded = "%" HEXDIG HEXDIG |
| 186 | */ |
| 187 | #define ISA_PCT_ENCODED(p) \ |
| 188 | ((*(p) == '%') && (ISA_HEXDIG(p + 1)) && (ISA_HEXDIG(p + 2))) |
| 189 | |
| 190 | /* |
| 191 | * pchar = unreserved / pct-encoded / sub-delims / ":" / "@" |
| 192 | */ |
| 193 | #define ISA_PCHAR(p) \ |
| 194 | (ISA_UNRESERVED(p) || ISA_PCT_ENCODED(p) || ISA_SUB_DELIM(p) || \ |
| 195 | ((*(p) == ':')) || ((*(p) == '@'))) |
| 196 | |
| 197 | /** |
| 198 | * xmlParse3986Scheme: |
| 199 | * @uri: pointer to an URI structure |
| 200 | * @str: pointer to the string to analyze |
| 201 | * |
| 202 | * Parse an URI scheme |
| 203 | * |
| 204 | * ALPHA *( ALPHA / DIGIT / "+" / "-" / "." ) |
| 205 | * |
| 206 | * Returns 0 or the error code |
| 207 | */ |
| 208 | static int |
| 209 | xmlParse3986Scheme(xmlURIPtr uri, const char **str) { |
| 210 | const char *cur; |
| 211 | |
| 212 | if (str == NULL) |
| 213 | return(-1); |
| 214 | |
| 215 | cur = *str; |
| 216 | if (!ISA_ALPHA(cur)) |
| 217 | return(2); |
| 218 | cur++; |
| 219 | while (ISA_ALPHA(cur) || ISA_DIGIT(cur) || |
| 220 | (*cur == '+') || (*cur == '-') || (*cur == '.')) cur++; |
| 221 | if (uri != NULL) { |
| 222 | if (uri->scheme != NULL) xmlFree(uri->scheme); |
| 223 | uri->scheme = STRNDUP(*str, cur - *str); |
| 224 | } |
| 225 | *str = cur; |
| 226 | return(0); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * xmlParse3986Fragment: |
| 231 | * @uri: pointer to an URI structure |
| 232 | * @str: pointer to the string to analyze |
| 233 | * |
| 234 | * Parse the query part of an URI |
| 235 | * |
Daniel Veillard | 84c45df | 2008-08-06 10:26:06 +0000 | [diff] [blame] | 236 | * fragment = *( pchar / "/" / "?" ) |
| 237 | * NOTE: the strict syntax as defined by 3986 does not allow '[' and ']' |
| 238 | * in the fragment identifier but this is used very broadly for |
| 239 | * xpointer scheme selection, so we are allowing it here to not break |
| 240 | * for example all the DocBook processing chains. |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 241 | * |
| 242 | * Returns 0 or the error code |
| 243 | */ |
| 244 | static int |
| 245 | xmlParse3986Fragment(xmlURIPtr uri, const char **str) |
| 246 | { |
| 247 | const char *cur; |
| 248 | |
| 249 | if (str == NULL) |
| 250 | return (-1); |
| 251 | |
| 252 | cur = *str; |
| 253 | |
| 254 | while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') || |
Daniel Veillard | 84c45df | 2008-08-06 10:26:06 +0000 | [diff] [blame] | 255 | (*cur == '[') || (*cur == ']') || |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 256 | ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) |
| 257 | NEXT(cur); |
| 258 | if (uri != NULL) { |
| 259 | if (uri->fragment != NULL) |
| 260 | xmlFree(uri->fragment); |
| 261 | if (uri->cleanup & 2) |
| 262 | uri->fragment = STRNDUP(*str, cur - *str); |
| 263 | else |
| 264 | uri->fragment = xmlURIUnescapeString(*str, cur - *str, NULL); |
| 265 | } |
| 266 | *str = cur; |
| 267 | return (0); |
| 268 | } |
| 269 | |
| 270 | /** |
| 271 | * xmlParse3986Query: |
| 272 | * @uri: pointer to an URI structure |
| 273 | * @str: pointer to the string to analyze |
| 274 | * |
| 275 | * Parse the query part of an URI |
| 276 | * |
| 277 | * query = *uric |
| 278 | * |
| 279 | * Returns 0 or the error code |
| 280 | */ |
| 281 | static int |
| 282 | xmlParse3986Query(xmlURIPtr uri, const char **str) |
| 283 | { |
| 284 | const char *cur; |
| 285 | |
| 286 | if (str == NULL) |
| 287 | return (-1); |
| 288 | |
| 289 | cur = *str; |
| 290 | |
| 291 | while ((ISA_PCHAR(cur)) || (*cur == '/') || (*cur == '?') || |
| 292 | ((uri != NULL) && (uri->cleanup & 1) && (IS_UNWISE(cur)))) |
| 293 | NEXT(cur); |
| 294 | if (uri != NULL) { |
| 295 | if (uri->query != NULL) |
| 296 | xmlFree(uri->query); |
| 297 | if (uri->cleanup & 2) |
| 298 | uri->query = STRNDUP(*str, cur - *str); |
| 299 | else |
| 300 | uri->query = xmlURIUnescapeString(*str, cur - *str, NULL); |
| 301 | |
| 302 | /* Save the raw bytes of the query as well. |
| 303 | * See: http://mail.gnome.org/archives/xml/2007-April/thread.html#00114 |
| 304 | */ |
| 305 | if (uri->query_raw != NULL) |
| 306 | xmlFree (uri->query_raw); |
| 307 | uri->query_raw = STRNDUP (*str, cur - *str); |
| 308 | } |
| 309 | *str = cur; |
| 310 | return (0); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * xmlParse3986Port: |
| 315 | * @uri: pointer to an URI structure |
| 316 | * @str: the string to analyze |
| 317 | * |
Michael Paddon | 846cf01 | 2016-05-21 17:16:05 +0800 | [diff] [blame] | 318 | * Parse a port part and fills in the appropriate fields |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 319 | * of the @uri structure |
| 320 | * |
| 321 | * port = *DIGIT |
| 322 | * |
| 323 | * Returns 0 or the error code |
| 324 | */ |
| 325 | static int |
| 326 | xmlParse3986Port(xmlURIPtr uri, const char **str) |
| 327 | { |
| 328 | const char *cur = *str; |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 329 | int port = 0; |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 330 | |
| 331 | if (ISA_DIGIT(cur)) { |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 332 | while (ISA_DIGIT(cur)) { |
Haibo Huang | d23e46c | 2020-10-28 22:26:09 -0700 | [diff] [blame] | 333 | int digit = *cur - '0'; |
| 334 | |
| 335 | if (port > INT_MAX / 10) |
| 336 | return(1); |
| 337 | port *= 10; |
| 338 | if (port > INT_MAX - digit) |
| 339 | return(1); |
| 340 | port += digit; |
Michael Paddon | 846cf01 | 2016-05-21 17:16:05 +0800 | [diff] [blame] | 341 | |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 342 | cur++; |
| 343 | } |
Michael Paddon | 846cf01 | 2016-05-21 17:16:05 +0800 | [diff] [blame] | 344 | if (uri != NULL) |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 345 | uri->port = port; |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 346 | *str = cur; |
| 347 | return(0); |
| 348 | } |
| 349 | return(1); |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * xmlParse3986Userinfo: |
| 354 | * @uri: pointer to an URI structure |
| 355 | * @str: the string to analyze |
| 356 | * |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 357 | * Parse an user information part and fills in the appropriate fields |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 358 | * of the @uri structure |
| 359 | * |
| 360 | * userinfo = *( unreserved / pct-encoded / sub-delims / ":" ) |
| 361 | * |
| 362 | * Returns 0 or the error code |
| 363 | */ |
| 364 | static int |
| 365 | xmlParse3986Userinfo(xmlURIPtr uri, const char **str) |
| 366 | { |
| 367 | const char *cur; |
| 368 | |
| 369 | cur = *str; |
| 370 | while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || |
| 371 | ISA_SUB_DELIM(cur) || (*cur == ':')) |
| 372 | NEXT(cur); |
| 373 | if (*cur == '@') { |
| 374 | if (uri != NULL) { |
| 375 | if (uri->user != NULL) xmlFree(uri->user); |
| 376 | if (uri->cleanup & 2) |
| 377 | uri->user = STRNDUP(*str, cur - *str); |
| 378 | else |
| 379 | uri->user = xmlURIUnescapeString(*str, cur - *str, NULL); |
| 380 | } |
| 381 | *str = cur; |
| 382 | return(0); |
| 383 | } |
| 384 | return(1); |
| 385 | } |
| 386 | |
| 387 | /** |
| 388 | * xmlParse3986DecOctet: |
| 389 | * @str: the string to analyze |
| 390 | * |
| 391 | * dec-octet = DIGIT ; 0-9 |
| 392 | * / %x31-39 DIGIT ; 10-99 |
| 393 | * / "1" 2DIGIT ; 100-199 |
| 394 | * / "2" %x30-34 DIGIT ; 200-249 |
| 395 | * / "25" %x30-35 ; 250-255 |
| 396 | * |
| 397 | * Skip a dec-octet. |
| 398 | * |
| 399 | * Returns 0 if found and skipped, 1 otherwise |
| 400 | */ |
| 401 | static int |
| 402 | xmlParse3986DecOctet(const char **str) { |
| 403 | const char *cur = *str; |
| 404 | |
| 405 | if (!(ISA_DIGIT(cur))) |
| 406 | return(1); |
| 407 | if (!ISA_DIGIT(cur+1)) |
| 408 | cur++; |
| 409 | else if ((*cur != '0') && (ISA_DIGIT(cur + 1)) && (!ISA_DIGIT(cur+2))) |
| 410 | cur += 2; |
| 411 | else if ((*cur == '1') && (ISA_DIGIT(cur + 1)) && (ISA_DIGIT(cur + 2))) |
| 412 | cur += 3; |
| 413 | else if ((*cur == '2') && (*(cur + 1) >= '0') && |
| 414 | (*(cur + 1) <= '4') && (ISA_DIGIT(cur + 2))) |
| 415 | cur += 3; |
| 416 | else if ((*cur == '2') && (*(cur + 1) == '5') && |
| 417 | (*(cur + 2) >= '0') && (*(cur + 1) <= '5')) |
| 418 | cur += 3; |
| 419 | else |
| 420 | return(1); |
| 421 | *str = cur; |
| 422 | return(0); |
| 423 | } |
| 424 | /** |
| 425 | * xmlParse3986Host: |
| 426 | * @uri: pointer to an URI structure |
| 427 | * @str: the string to analyze |
| 428 | * |
| 429 | * Parse an host part and fills in the appropriate fields |
| 430 | * of the @uri structure |
| 431 | * |
| 432 | * host = IP-literal / IPv4address / reg-name |
| 433 | * IP-literal = "[" ( IPv6address / IPvFuture ) "]" |
| 434 | * IPv4address = dec-octet "." dec-octet "." dec-octet "." dec-octet |
| 435 | * reg-name = *( unreserved / pct-encoded / sub-delims ) |
| 436 | * |
| 437 | * Returns 0 or the error code |
| 438 | */ |
| 439 | static int |
| 440 | xmlParse3986Host(xmlURIPtr uri, const char **str) |
| 441 | { |
| 442 | const char *cur = *str; |
| 443 | const char *host; |
| 444 | |
| 445 | host = cur; |
| 446 | /* |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 447 | * IPv6 and future addressing scheme are enclosed between brackets |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 448 | */ |
| 449 | if (*cur == '[') { |
| 450 | cur++; |
| 451 | while ((*cur != ']') && (*cur != 0)) |
| 452 | cur++; |
| 453 | if (*cur != ']') |
| 454 | return(1); |
| 455 | cur++; |
| 456 | goto found; |
| 457 | } |
| 458 | /* |
| 459 | * try to parse an IPv4 |
| 460 | */ |
| 461 | if (ISA_DIGIT(cur)) { |
| 462 | if (xmlParse3986DecOctet(&cur) != 0) |
| 463 | goto not_ipv4; |
| 464 | if (*cur != '.') |
| 465 | goto not_ipv4; |
| 466 | cur++; |
| 467 | if (xmlParse3986DecOctet(&cur) != 0) |
| 468 | goto not_ipv4; |
| 469 | if (*cur != '.') |
| 470 | goto not_ipv4; |
| 471 | if (xmlParse3986DecOctet(&cur) != 0) |
| 472 | goto not_ipv4; |
| 473 | if (*cur != '.') |
| 474 | goto not_ipv4; |
| 475 | if (xmlParse3986DecOctet(&cur) != 0) |
| 476 | goto not_ipv4; |
| 477 | goto found; |
| 478 | not_ipv4: |
| 479 | cur = *str; |
| 480 | } |
| 481 | /* |
| 482 | * then this should be a hostname which can be empty |
| 483 | */ |
| 484 | while (ISA_UNRESERVED(cur) || ISA_PCT_ENCODED(cur) || ISA_SUB_DELIM(cur)) |
| 485 | NEXT(cur); |
| 486 | found: |
| 487 | if (uri != NULL) { |
| 488 | if (uri->authority != NULL) xmlFree(uri->authority); |
| 489 | uri->authority = NULL; |
| 490 | if (uri->server != NULL) xmlFree(uri->server); |
| 491 | if (cur != host) { |
| 492 | if (uri->cleanup & 2) |
| 493 | uri->server = STRNDUP(host, cur - host); |
| 494 | else |
| 495 | uri->server = xmlURIUnescapeString(host, cur - host, NULL); |
| 496 | } else |
| 497 | uri->server = NULL; |
| 498 | } |
| 499 | *str = cur; |
| 500 | return(0); |
| 501 | } |
| 502 | |
| 503 | /** |
| 504 | * xmlParse3986Authority: |
| 505 | * @uri: pointer to an URI structure |
| 506 | * @str: the string to analyze |
| 507 | * |
| 508 | * Parse an authority part and fills in the appropriate fields |
| 509 | * of the @uri structure |
| 510 | * |
| 511 | * authority = [ userinfo "@" ] host [ ":" port ] |
| 512 | * |
| 513 | * Returns 0 or the error code |
| 514 | */ |
| 515 | static int |
| 516 | xmlParse3986Authority(xmlURIPtr uri, const char **str) |
| 517 | { |
| 518 | const char *cur; |
| 519 | int ret; |
| 520 | |
| 521 | cur = *str; |
| 522 | /* |
| 523 | * try to parse an userinfo and check for the trailing @ |
| 524 | */ |
| 525 | ret = xmlParse3986Userinfo(uri, &cur); |
| 526 | if ((ret != 0) || (*cur != '@')) |
| 527 | cur = *str; |
| 528 | else |
| 529 | cur++; |
| 530 | ret = xmlParse3986Host(uri, &cur); |
| 531 | if (ret != 0) return(ret); |
| 532 | if (*cur == ':') { |
Daniel Veillard | f582d14 | 2008-08-27 17:23:41 +0000 | [diff] [blame] | 533 | cur++; |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 534 | ret = xmlParse3986Port(uri, &cur); |
| 535 | if (ret != 0) return(ret); |
| 536 | } |
| 537 | *str = cur; |
| 538 | return(0); |
| 539 | } |
| 540 | |
| 541 | /** |
| 542 | * xmlParse3986Segment: |
| 543 | * @str: the string to analyze |
| 544 | * @forbid: an optional forbidden character |
| 545 | * @empty: allow an empty segment |
| 546 | * |
| 547 | * Parse a segment and fills in the appropriate fields |
| 548 | * of the @uri structure |
| 549 | * |
| 550 | * segment = *pchar |
| 551 | * segment-nz = 1*pchar |
| 552 | * segment-nz-nc = 1*( unreserved / pct-encoded / sub-delims / "@" ) |
| 553 | * ; non-zero-length segment without any colon ":" |
| 554 | * |
| 555 | * Returns 0 or the error code |
| 556 | */ |
| 557 | static int |
| 558 | xmlParse3986Segment(const char **str, char forbid, int empty) |
| 559 | { |
| 560 | const char *cur; |
| 561 | |
| 562 | cur = *str; |
| 563 | if (!ISA_PCHAR(cur)) { |
| 564 | if (empty) |
| 565 | return(0); |
| 566 | return(1); |
| 567 | } |
| 568 | while (ISA_PCHAR(cur) && (*cur != forbid)) |
| 569 | NEXT(cur); |
| 570 | *str = cur; |
| 571 | return (0); |
| 572 | } |
| 573 | |
| 574 | /** |
| 575 | * xmlParse3986PathAbEmpty: |
| 576 | * @uri: pointer to an URI structure |
| 577 | * @str: the string to analyze |
| 578 | * |
| 579 | * Parse an path absolute or empty and fills in the appropriate fields |
| 580 | * of the @uri structure |
| 581 | * |
| 582 | * path-abempty = *( "/" segment ) |
| 583 | * |
| 584 | * Returns 0 or the error code |
| 585 | */ |
| 586 | static int |
| 587 | xmlParse3986PathAbEmpty(xmlURIPtr uri, const char **str) |
| 588 | { |
| 589 | const char *cur; |
| 590 | int ret; |
| 591 | |
| 592 | cur = *str; |
| 593 | |
| 594 | while (*cur == '/') { |
| 595 | cur++; |
| 596 | ret = xmlParse3986Segment(&cur, 0, 1); |
| 597 | if (ret != 0) return(ret); |
| 598 | } |
| 599 | if (uri != NULL) { |
| 600 | if (uri->path != NULL) xmlFree(uri->path); |
Daniel Veillard | 1358fef | 2009-10-02 17:29:48 +0200 | [diff] [blame] | 601 | if (*str != cur) { |
| 602 | if (uri->cleanup & 2) |
| 603 | uri->path = STRNDUP(*str, cur - *str); |
| 604 | else |
| 605 | uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); |
| 606 | } else { |
| 607 | uri->path = NULL; |
| 608 | } |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 609 | } |
| 610 | *str = cur; |
| 611 | return (0); |
| 612 | } |
| 613 | |
| 614 | /** |
| 615 | * xmlParse3986PathAbsolute: |
| 616 | * @uri: pointer to an URI structure |
| 617 | * @str: the string to analyze |
| 618 | * |
| 619 | * Parse an path absolute and fills in the appropriate fields |
| 620 | * of the @uri structure |
| 621 | * |
| 622 | * path-absolute = "/" [ segment-nz *( "/" segment ) ] |
| 623 | * |
| 624 | * Returns 0 or the error code |
| 625 | */ |
| 626 | static int |
| 627 | xmlParse3986PathAbsolute(xmlURIPtr uri, const char **str) |
| 628 | { |
| 629 | const char *cur; |
| 630 | int ret; |
| 631 | |
| 632 | cur = *str; |
| 633 | |
| 634 | if (*cur != '/') |
| 635 | return(1); |
| 636 | cur++; |
| 637 | ret = xmlParse3986Segment(&cur, 0, 0); |
| 638 | if (ret == 0) { |
| 639 | while (*cur == '/') { |
| 640 | cur++; |
| 641 | ret = xmlParse3986Segment(&cur, 0, 1); |
| 642 | if (ret != 0) return(ret); |
| 643 | } |
| 644 | } |
| 645 | if (uri != NULL) { |
| 646 | if (uri->path != NULL) xmlFree(uri->path); |
Daniel Veillard | 1358fef | 2009-10-02 17:29:48 +0200 | [diff] [blame] | 647 | if (cur != *str) { |
| 648 | if (uri->cleanup & 2) |
| 649 | uri->path = STRNDUP(*str, cur - *str); |
| 650 | else |
| 651 | uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); |
| 652 | } else { |
| 653 | uri->path = NULL; |
| 654 | } |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 655 | } |
| 656 | *str = cur; |
| 657 | return (0); |
| 658 | } |
| 659 | |
| 660 | /** |
| 661 | * xmlParse3986PathRootless: |
| 662 | * @uri: pointer to an URI structure |
| 663 | * @str: the string to analyze |
| 664 | * |
| 665 | * Parse an path without root and fills in the appropriate fields |
| 666 | * of the @uri structure |
| 667 | * |
| 668 | * path-rootless = segment-nz *( "/" segment ) |
| 669 | * |
| 670 | * Returns 0 or the error code |
| 671 | */ |
| 672 | static int |
| 673 | xmlParse3986PathRootless(xmlURIPtr uri, const char **str) |
| 674 | { |
| 675 | const char *cur; |
| 676 | int ret; |
| 677 | |
| 678 | cur = *str; |
| 679 | |
| 680 | ret = xmlParse3986Segment(&cur, 0, 0); |
| 681 | if (ret != 0) return(ret); |
| 682 | while (*cur == '/') { |
| 683 | cur++; |
| 684 | ret = xmlParse3986Segment(&cur, 0, 1); |
| 685 | if (ret != 0) return(ret); |
| 686 | } |
| 687 | if (uri != NULL) { |
| 688 | if (uri->path != NULL) xmlFree(uri->path); |
Daniel Veillard | 1358fef | 2009-10-02 17:29:48 +0200 | [diff] [blame] | 689 | if (cur != *str) { |
| 690 | if (uri->cleanup & 2) |
| 691 | uri->path = STRNDUP(*str, cur - *str); |
| 692 | else |
| 693 | uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); |
| 694 | } else { |
| 695 | uri->path = NULL; |
| 696 | } |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 697 | } |
| 698 | *str = cur; |
| 699 | return (0); |
| 700 | } |
| 701 | |
| 702 | /** |
| 703 | * xmlParse3986PathNoScheme: |
| 704 | * @uri: pointer to an URI structure |
| 705 | * @str: the string to analyze |
| 706 | * |
| 707 | * Parse an path which is not a scheme and fills in the appropriate fields |
| 708 | * of the @uri structure |
| 709 | * |
| 710 | * path-noscheme = segment-nz-nc *( "/" segment ) |
| 711 | * |
| 712 | * Returns 0 or the error code |
| 713 | */ |
| 714 | static int |
| 715 | xmlParse3986PathNoScheme(xmlURIPtr uri, const char **str) |
| 716 | { |
| 717 | const char *cur; |
| 718 | int ret; |
| 719 | |
| 720 | cur = *str; |
| 721 | |
| 722 | ret = xmlParse3986Segment(&cur, ':', 0); |
| 723 | if (ret != 0) return(ret); |
| 724 | while (*cur == '/') { |
| 725 | cur++; |
| 726 | ret = xmlParse3986Segment(&cur, 0, 1); |
| 727 | if (ret != 0) return(ret); |
| 728 | } |
| 729 | if (uri != NULL) { |
| 730 | if (uri->path != NULL) xmlFree(uri->path); |
Daniel Veillard | 1358fef | 2009-10-02 17:29:48 +0200 | [diff] [blame] | 731 | if (cur != *str) { |
| 732 | if (uri->cleanup & 2) |
| 733 | uri->path = STRNDUP(*str, cur - *str); |
| 734 | else |
| 735 | uri->path = xmlURIUnescapeString(*str, cur - *str, NULL); |
| 736 | } else { |
| 737 | uri->path = NULL; |
| 738 | } |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 739 | } |
| 740 | *str = cur; |
| 741 | return (0); |
| 742 | } |
| 743 | |
| 744 | /** |
| 745 | * xmlParse3986HierPart: |
| 746 | * @uri: pointer to an URI structure |
| 747 | * @str: the string to analyze |
| 748 | * |
| 749 | * Parse an hierarchical part and fills in the appropriate fields |
| 750 | * of the @uri structure |
| 751 | * |
| 752 | * hier-part = "//" authority path-abempty |
| 753 | * / path-absolute |
| 754 | * / path-rootless |
| 755 | * / path-empty |
| 756 | * |
| 757 | * Returns 0 or the error code |
| 758 | */ |
| 759 | static int |
| 760 | xmlParse3986HierPart(xmlURIPtr uri, const char **str) |
| 761 | { |
| 762 | const char *cur; |
| 763 | int ret; |
| 764 | |
| 765 | cur = *str; |
| 766 | |
| 767 | if ((*cur == '/') && (*(cur + 1) == '/')) { |
| 768 | cur += 2; |
| 769 | ret = xmlParse3986Authority(uri, &cur); |
| 770 | if (ret != 0) return(ret); |
Daniel Veillard | beb7281 | 2014-10-03 19:22:39 +0800 | [diff] [blame] | 771 | if (uri->server == NULL) |
| 772 | uri->port = -1; |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 773 | ret = xmlParse3986PathAbEmpty(uri, &cur); |
| 774 | if (ret != 0) return(ret); |
| 775 | *str = cur; |
| 776 | return(0); |
| 777 | } else if (*cur == '/') { |
| 778 | ret = xmlParse3986PathAbsolute(uri, &cur); |
| 779 | if (ret != 0) return(ret); |
| 780 | } else if (ISA_PCHAR(cur)) { |
| 781 | ret = xmlParse3986PathRootless(uri, &cur); |
| 782 | if (ret != 0) return(ret); |
| 783 | } else { |
| 784 | /* path-empty is effectively empty */ |
| 785 | if (uri != NULL) { |
| 786 | if (uri->path != NULL) xmlFree(uri->path); |
| 787 | uri->path = NULL; |
| 788 | } |
| 789 | } |
| 790 | *str = cur; |
| 791 | return (0); |
| 792 | } |
| 793 | |
| 794 | /** |
| 795 | * xmlParse3986RelativeRef: |
| 796 | * @uri: pointer to an URI structure |
| 797 | * @str: the string to analyze |
| 798 | * |
| 799 | * Parse an URI string and fills in the appropriate fields |
| 800 | * of the @uri structure |
| 801 | * |
| 802 | * relative-ref = relative-part [ "?" query ] [ "#" fragment ] |
| 803 | * relative-part = "//" authority path-abempty |
| 804 | * / path-absolute |
| 805 | * / path-noscheme |
| 806 | * / path-empty |
| 807 | * |
| 808 | * Returns 0 or the error code |
| 809 | */ |
| 810 | static int |
| 811 | xmlParse3986RelativeRef(xmlURIPtr uri, const char *str) { |
| 812 | int ret; |
| 813 | |
| 814 | if ((*str == '/') && (*(str + 1) == '/')) { |
| 815 | str += 2; |
| 816 | ret = xmlParse3986Authority(uri, &str); |
| 817 | if (ret != 0) return(ret); |
| 818 | ret = xmlParse3986PathAbEmpty(uri, &str); |
| 819 | if (ret != 0) return(ret); |
| 820 | } else if (*str == '/') { |
| 821 | ret = xmlParse3986PathAbsolute(uri, &str); |
| 822 | if (ret != 0) return(ret); |
| 823 | } else if (ISA_PCHAR(str)) { |
| 824 | ret = xmlParse3986PathNoScheme(uri, &str); |
| 825 | if (ret != 0) return(ret); |
| 826 | } else { |
| 827 | /* path-empty is effectively empty */ |
| 828 | if (uri != NULL) { |
| 829 | if (uri->path != NULL) xmlFree(uri->path); |
| 830 | uri->path = NULL; |
| 831 | } |
| 832 | } |
| 833 | |
| 834 | if (*str == '?') { |
| 835 | str++; |
| 836 | ret = xmlParse3986Query(uri, &str); |
| 837 | if (ret != 0) return(ret); |
| 838 | } |
| 839 | if (*str == '#') { |
| 840 | str++; |
| 841 | ret = xmlParse3986Fragment(uri, &str); |
| 842 | if (ret != 0) return(ret); |
| 843 | } |
| 844 | if (*str != 0) { |
| 845 | xmlCleanURI(uri); |
| 846 | return(1); |
| 847 | } |
| 848 | return(0); |
| 849 | } |
| 850 | |
| 851 | |
| 852 | /** |
| 853 | * xmlParse3986URI: |
| 854 | * @uri: pointer to an URI structure |
| 855 | * @str: the string to analyze |
| 856 | * |
| 857 | * Parse an URI string and fills in the appropriate fields |
| 858 | * of the @uri structure |
| 859 | * |
| 860 | * scheme ":" hier-part [ "?" query ] [ "#" fragment ] |
| 861 | * |
| 862 | * Returns 0 or the error code |
| 863 | */ |
| 864 | static int |
| 865 | xmlParse3986URI(xmlURIPtr uri, const char *str) { |
| 866 | int ret; |
| 867 | |
| 868 | ret = xmlParse3986Scheme(uri, &str); |
| 869 | if (ret != 0) return(ret); |
| 870 | if (*str != ':') { |
| 871 | return(1); |
| 872 | } |
| 873 | str++; |
| 874 | ret = xmlParse3986HierPart(uri, &str); |
| 875 | if (ret != 0) return(ret); |
| 876 | if (*str == '?') { |
| 877 | str++; |
| 878 | ret = xmlParse3986Query(uri, &str); |
| 879 | if (ret != 0) return(ret); |
| 880 | } |
| 881 | if (*str == '#') { |
| 882 | str++; |
| 883 | ret = xmlParse3986Fragment(uri, &str); |
| 884 | if (ret != 0) return(ret); |
| 885 | } |
| 886 | if (*str != 0) { |
| 887 | xmlCleanURI(uri); |
| 888 | return(1); |
| 889 | } |
| 890 | return(0); |
| 891 | } |
| 892 | |
| 893 | /** |
| 894 | * xmlParse3986URIReference: |
| 895 | * @uri: pointer to an URI structure |
| 896 | * @str: the string to analyze |
| 897 | * |
| 898 | * Parse an URI reference string and fills in the appropriate fields |
| 899 | * of the @uri structure |
| 900 | * |
| 901 | * URI-reference = URI / relative-ref |
| 902 | * |
| 903 | * Returns 0 or the error code |
| 904 | */ |
| 905 | static int |
| 906 | xmlParse3986URIReference(xmlURIPtr uri, const char *str) { |
| 907 | int ret; |
| 908 | |
| 909 | if (str == NULL) |
| 910 | return(-1); |
| 911 | xmlCleanURI(uri); |
| 912 | |
| 913 | /* |
| 914 | * Try first to parse absolute refs, then fallback to relative if |
| 915 | * it fails. |
| 916 | */ |
| 917 | ret = xmlParse3986URI(uri, str); |
| 918 | if (ret != 0) { |
| 919 | xmlCleanURI(uri); |
| 920 | ret = xmlParse3986RelativeRef(uri, str); |
| 921 | if (ret != 0) { |
| 922 | xmlCleanURI(uri); |
| 923 | return(ret); |
| 924 | } |
| 925 | } |
| 926 | return(0); |
| 927 | } |
| 928 | |
| 929 | /** |
| 930 | * xmlParseURI: |
| 931 | * @str: the URI string to analyze |
| 932 | * |
| 933 | * Parse an URI based on RFC 3986 |
| 934 | * |
| 935 | * URI-reference = [ absoluteURI | relativeURI ] [ "#" fragment ] |
| 936 | * |
| 937 | * Returns a newly built xmlURIPtr or NULL in case of error |
| 938 | */ |
| 939 | xmlURIPtr |
| 940 | xmlParseURI(const char *str) { |
| 941 | xmlURIPtr uri; |
| 942 | int ret; |
| 943 | |
| 944 | if (str == NULL) |
| 945 | return(NULL); |
| 946 | uri = xmlCreateURI(); |
| 947 | if (uri != NULL) { |
| 948 | ret = xmlParse3986URIReference(uri, str); |
| 949 | if (ret) { |
| 950 | xmlFreeURI(uri); |
| 951 | return(NULL); |
| 952 | } |
| 953 | } |
| 954 | return(uri); |
| 955 | } |
| 956 | |
| 957 | /** |
| 958 | * xmlParseURIReference: |
| 959 | * @uri: pointer to an URI structure |
| 960 | * @str: the string to analyze |
| 961 | * |
| 962 | * Parse an URI reference string based on RFC 3986 and fills in the |
| 963 | * appropriate fields of the @uri structure |
| 964 | * |
| 965 | * URI-reference = URI / relative-ref |
| 966 | * |
| 967 | * Returns 0 or the error code |
| 968 | */ |
| 969 | int |
| 970 | xmlParseURIReference(xmlURIPtr uri, const char *str) { |
| 971 | return(xmlParse3986URIReference(uri, str)); |
| 972 | } |
| 973 | |
| 974 | /** |
| 975 | * xmlParseURIRaw: |
| 976 | * @str: the URI string to analyze |
| 977 | * @raw: if 1 unescaping of URI pieces are disabled |
| 978 | * |
| 979 | * Parse an URI but allows to keep intact the original fragments. |
| 980 | * |
| 981 | * URI-reference = URI / relative-ref |
| 982 | * |
| 983 | * Returns a newly built xmlURIPtr or NULL in case of error |
| 984 | */ |
| 985 | xmlURIPtr |
| 986 | xmlParseURIRaw(const char *str, int raw) { |
| 987 | xmlURIPtr uri; |
| 988 | int ret; |
| 989 | |
| 990 | if (str == NULL) |
| 991 | return(NULL); |
| 992 | uri = xmlCreateURI(); |
| 993 | if (uri != NULL) { |
| 994 | if (raw) { |
| 995 | uri->cleanup |= 2; |
| 996 | } |
| 997 | ret = xmlParseURIReference(uri, str); |
| 998 | if (ret) { |
| 999 | xmlFreeURI(uri); |
| 1000 | return(NULL); |
| 1001 | } |
| 1002 | } |
| 1003 | return(uri); |
| 1004 | } |
| 1005 | |
| 1006 | /************************************************************************ |
| 1007 | * * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1008 | * Generic URI structure functions * |
| 1009 | * * |
| 1010 | ************************************************************************/ |
| 1011 | |
| 1012 | /** |
| 1013 | * xmlCreateURI: |
| 1014 | * |
| 1015 | * Simply creates an empty xmlURI |
| 1016 | * |
| 1017 | * Returns the new structure or NULL in case of error |
| 1018 | */ |
| 1019 | xmlURIPtr |
| 1020 | xmlCreateURI(void) { |
| 1021 | xmlURIPtr ret; |
| 1022 | |
| 1023 | ret = (xmlURIPtr) xmlMalloc(sizeof(xmlURI)); |
| 1024 | if (ret == NULL) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1025 | xmlURIErrMemory("creating URI structure\n"); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1026 | return(NULL); |
| 1027 | } |
| 1028 | memset(ret, 0, sizeof(xmlURI)); |
| 1029 | return(ret); |
| 1030 | } |
| 1031 | |
| 1032 | /** |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1033 | * xmlSaveUriRealloc: |
| 1034 | * |
| 1035 | * Function to handle properly a reallocation when saving an URI |
| 1036 | * Also imposes some limit on the length of an URI string output |
| 1037 | */ |
| 1038 | static xmlChar * |
| 1039 | xmlSaveUriRealloc(xmlChar *ret, int *max) { |
| 1040 | xmlChar *temp; |
| 1041 | int tmp; |
| 1042 | |
| 1043 | if (*max > MAX_URI_LENGTH) { |
| 1044 | xmlURIErrMemory("reaching arbitrary MAX_URI_LENGTH limit\n"); |
| 1045 | return(NULL); |
| 1046 | } |
| 1047 | tmp = *max * 2; |
| 1048 | temp = (xmlChar *) xmlRealloc(ret, (tmp + 1)); |
| 1049 | if (temp == NULL) { |
| 1050 | xmlURIErrMemory("saving URI\n"); |
| 1051 | return(NULL); |
| 1052 | } |
| 1053 | *max = tmp; |
| 1054 | return(temp); |
| 1055 | } |
| 1056 | |
| 1057 | /** |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1058 | * xmlSaveUri: |
| 1059 | * @uri: pointer to an xmlURI |
| 1060 | * |
| 1061 | * Save the URI as an escaped string |
| 1062 | * |
| 1063 | * Returns a new string (to be deallocated by caller) |
| 1064 | */ |
| 1065 | xmlChar * |
| 1066 | xmlSaveUri(xmlURIPtr uri) { |
| 1067 | xmlChar *ret = NULL; |
Daniel Veillard | ed86dc2 | 2008-04-24 11:58:41 +0000 | [diff] [blame] | 1068 | xmlChar *temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1069 | const char *p; |
| 1070 | int len; |
| 1071 | int max; |
| 1072 | |
| 1073 | if (uri == NULL) return(NULL); |
| 1074 | |
| 1075 | |
| 1076 | max = 80; |
Daniel Veillard | 3c908dc | 2003-04-19 00:07:51 +0000 | [diff] [blame] | 1077 | ret = (xmlChar *) xmlMallocAtomic((max + 1) * sizeof(xmlChar)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1078 | if (ret == NULL) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1079 | xmlURIErrMemory("saving URI\n"); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1080 | return(NULL); |
| 1081 | } |
| 1082 | len = 0; |
| 1083 | |
| 1084 | if (uri->scheme != NULL) { |
| 1085 | p = uri->scheme; |
| 1086 | while (*p != 0) { |
| 1087 | if (len >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1088 | temp = xmlSaveUriRealloc(ret, &max); |
| 1089 | if (temp == NULL) goto mem_error; |
Daniel Veillard | ed86dc2 | 2008-04-24 11:58:41 +0000 | [diff] [blame] | 1090 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1091 | } |
| 1092 | ret[len++] = *p++; |
| 1093 | } |
| 1094 | if (len >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1095 | temp = xmlSaveUriRealloc(ret, &max); |
| 1096 | if (temp == NULL) goto mem_error; |
| 1097 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1098 | } |
| 1099 | ret[len++] = ':'; |
| 1100 | } |
| 1101 | if (uri->opaque != NULL) { |
| 1102 | p = uri->opaque; |
| 1103 | while (*p != 0) { |
| 1104 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1105 | temp = xmlSaveUriRealloc(ret, &max); |
| 1106 | if (temp == NULL) goto mem_error; |
| 1107 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1108 | } |
Daniel Veillard | 9231ff9 | 2003-03-23 22:00:51 +0000 | [diff] [blame] | 1109 | if (IS_RESERVED(*(p)) || IS_UNRESERVED(*(p))) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1110 | ret[len++] = *p++; |
| 1111 | else { |
| 1112 | int val = *(unsigned char *)p++; |
| 1113 | int hi = val / 0x10, lo = val % 0x10; |
| 1114 | ret[len++] = '%'; |
| 1115 | ret[len++] = hi + (hi > 9? 'A'-10 : '0'); |
| 1116 | ret[len++] = lo + (lo > 9? 'A'-10 : '0'); |
| 1117 | } |
| 1118 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1119 | } else { |
Daniel Veillard | beb7281 | 2014-10-03 19:22:39 +0800 | [diff] [blame] | 1120 | if ((uri->server != NULL) || (uri->port == -1)) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1121 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1122 | temp = xmlSaveUriRealloc(ret, &max); |
| 1123 | if (temp == NULL) goto mem_error; |
| 1124 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1125 | } |
| 1126 | ret[len++] = '/'; |
| 1127 | ret[len++] = '/'; |
| 1128 | if (uri->user != NULL) { |
| 1129 | p = uri->user; |
| 1130 | while (*p != 0) { |
| 1131 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1132 | temp = xmlSaveUriRealloc(ret, &max); |
| 1133 | if (temp == NULL) goto mem_error; |
| 1134 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1135 | } |
| 1136 | if ((IS_UNRESERVED(*(p))) || |
| 1137 | ((*(p) == ';')) || ((*(p) == ':')) || |
| 1138 | ((*(p) == '&')) || ((*(p) == '=')) || |
| 1139 | ((*(p) == '+')) || ((*(p) == '$')) || |
| 1140 | ((*(p) == ','))) |
| 1141 | ret[len++] = *p++; |
| 1142 | else { |
| 1143 | int val = *(unsigned char *)p++; |
| 1144 | int hi = val / 0x10, lo = val % 0x10; |
| 1145 | ret[len++] = '%'; |
| 1146 | ret[len++] = hi + (hi > 9? 'A'-10 : '0'); |
| 1147 | ret[len++] = lo + (lo > 9? 'A'-10 : '0'); |
| 1148 | } |
| 1149 | } |
| 1150 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1151 | temp = xmlSaveUriRealloc(ret, &max); |
| 1152 | if (temp == NULL) goto mem_error; |
| 1153 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1154 | } |
| 1155 | ret[len++] = '@'; |
| 1156 | } |
Daniel Veillard | beb7281 | 2014-10-03 19:22:39 +0800 | [diff] [blame] | 1157 | if (uri->server != NULL) { |
| 1158 | p = uri->server; |
| 1159 | while (*p != 0) { |
| 1160 | if (len >= max) { |
| 1161 | temp = xmlSaveUriRealloc(ret, &max); |
| 1162 | if (temp == NULL) goto mem_error; |
| 1163 | ret = temp; |
| 1164 | } |
| 1165 | ret[len++] = *p++; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1166 | } |
Daniel Veillard | beb7281 | 2014-10-03 19:22:39 +0800 | [diff] [blame] | 1167 | if (uri->port > 0) { |
| 1168 | if (len + 10 >= max) { |
| 1169 | temp = xmlSaveUriRealloc(ret, &max); |
| 1170 | if (temp == NULL) goto mem_error; |
| 1171 | ret = temp; |
| 1172 | } |
| 1173 | len += snprintf((char *) &ret[len], max - len, ":%d", uri->port); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1174 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1175 | } |
| 1176 | } else if (uri->authority != NULL) { |
| 1177 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1178 | temp = xmlSaveUriRealloc(ret, &max); |
| 1179 | if (temp == NULL) goto mem_error; |
| 1180 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1181 | } |
| 1182 | ret[len++] = '/'; |
| 1183 | ret[len++] = '/'; |
| 1184 | p = uri->authority; |
| 1185 | while (*p != 0) { |
| 1186 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1187 | temp = xmlSaveUriRealloc(ret, &max); |
| 1188 | if (temp == NULL) goto mem_error; |
| 1189 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1190 | } |
| 1191 | if ((IS_UNRESERVED(*(p))) || |
| 1192 | ((*(p) == '$')) || ((*(p) == ',')) || ((*(p) == ';')) || |
| 1193 | ((*(p) == ':')) || ((*(p) == '@')) || ((*(p) == '&')) || |
| 1194 | ((*(p) == '=')) || ((*(p) == '+'))) |
| 1195 | ret[len++] = *p++; |
| 1196 | else { |
| 1197 | int val = *(unsigned char *)p++; |
| 1198 | int hi = val / 0x10, lo = val % 0x10; |
| 1199 | ret[len++] = '%'; |
| 1200 | ret[len++] = hi + (hi > 9? 'A'-10 : '0'); |
| 1201 | ret[len++] = lo + (lo > 9? 'A'-10 : '0'); |
| 1202 | } |
| 1203 | } |
| 1204 | } else if (uri->scheme != NULL) { |
| 1205 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1206 | temp = xmlSaveUriRealloc(ret, &max); |
| 1207 | if (temp == NULL) goto mem_error; |
| 1208 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1209 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1210 | } |
| 1211 | if (uri->path != NULL) { |
| 1212 | p = uri->path; |
Daniel Veillard | e54c317 | 2008-03-25 13:22:41 +0000 | [diff] [blame] | 1213 | /* |
| 1214 | * the colon in file:///d: should not be escaped or |
| 1215 | * Windows accesses fail later. |
| 1216 | */ |
| 1217 | if ((uri->scheme != NULL) && |
| 1218 | (p[0] == '/') && |
| 1219 | (((p[1] >= 'a') && (p[1] <= 'z')) || |
| 1220 | ((p[1] >= 'A') && (p[1] <= 'Z'))) && |
| 1221 | (p[2] == ':') && |
Daniel Veillard | d7af555 | 2008-08-04 15:29:44 +0000 | [diff] [blame] | 1222 | (xmlStrEqual(BAD_CAST uri->scheme, BAD_CAST "file"))) { |
Daniel Veillard | e54c317 | 2008-03-25 13:22:41 +0000 | [diff] [blame] | 1223 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1224 | temp = xmlSaveUriRealloc(ret, &max); |
| 1225 | if (temp == NULL) goto mem_error; |
| 1226 | ret = temp; |
Daniel Veillard | e54c317 | 2008-03-25 13:22:41 +0000 | [diff] [blame] | 1227 | } |
| 1228 | ret[len++] = *p++; |
| 1229 | ret[len++] = *p++; |
| 1230 | ret[len++] = *p++; |
| 1231 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1232 | while (*p != 0) { |
| 1233 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1234 | temp = xmlSaveUriRealloc(ret, &max); |
| 1235 | if (temp == NULL) goto mem_error; |
| 1236 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1237 | } |
| 1238 | if ((IS_UNRESERVED(*(p))) || ((*(p) == '/')) || |
| 1239 | ((*(p) == ';')) || ((*(p) == '@')) || ((*(p) == '&')) || |
| 1240 | ((*(p) == '=')) || ((*(p) == '+')) || ((*(p) == '$')) || |
| 1241 | ((*(p) == ','))) |
| 1242 | ret[len++] = *p++; |
| 1243 | else { |
| 1244 | int val = *(unsigned char *)p++; |
| 1245 | int hi = val / 0x10, lo = val % 0x10; |
| 1246 | ret[len++] = '%'; |
| 1247 | ret[len++] = hi + (hi > 9? 'A'-10 : '0'); |
| 1248 | ret[len++] = lo + (lo > 9? 'A'-10 : '0'); |
| 1249 | } |
| 1250 | } |
| 1251 | } |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1252 | if (uri->query_raw != NULL) { |
| 1253 | if (len + 1 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1254 | temp = xmlSaveUriRealloc(ret, &max); |
| 1255 | if (temp == NULL) goto mem_error; |
| 1256 | ret = temp; |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1257 | } |
| 1258 | ret[len++] = '?'; |
| 1259 | p = uri->query_raw; |
| 1260 | while (*p != 0) { |
| 1261 | if (len + 1 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1262 | temp = xmlSaveUriRealloc(ret, &max); |
| 1263 | if (temp == NULL) goto mem_error; |
| 1264 | ret = temp; |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1265 | } |
| 1266 | ret[len++] = *p++; |
| 1267 | } |
| 1268 | } else if (uri->query != NULL) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1269 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1270 | temp = xmlSaveUriRealloc(ret, &max); |
| 1271 | if (temp == NULL) goto mem_error; |
| 1272 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1273 | } |
| 1274 | ret[len++] = '?'; |
| 1275 | p = uri->query; |
| 1276 | while (*p != 0) { |
| 1277 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1278 | temp = xmlSaveUriRealloc(ret, &max); |
| 1279 | if (temp == NULL) goto mem_error; |
| 1280 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1281 | } |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1282 | if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1283 | ret[len++] = *p++; |
| 1284 | else { |
| 1285 | int val = *(unsigned char *)p++; |
| 1286 | int hi = val / 0x10, lo = val % 0x10; |
| 1287 | ret[len++] = '%'; |
| 1288 | ret[len++] = hi + (hi > 9? 'A'-10 : '0'); |
| 1289 | ret[len++] = lo + (lo > 9? 'A'-10 : '0'); |
| 1290 | } |
| 1291 | } |
| 1292 | } |
Daniel Veillard | fdd27d2 | 2002-11-28 11:55:38 +0000 | [diff] [blame] | 1293 | } |
| 1294 | if (uri->fragment != NULL) { |
| 1295 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1296 | temp = xmlSaveUriRealloc(ret, &max); |
| 1297 | if (temp == NULL) goto mem_error; |
| 1298 | ret = temp; |
Daniel Veillard | fdd27d2 | 2002-11-28 11:55:38 +0000 | [diff] [blame] | 1299 | } |
| 1300 | ret[len++] = '#'; |
| 1301 | p = uri->fragment; |
| 1302 | while (*p != 0) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1303 | if (len + 3 >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1304 | temp = xmlSaveUriRealloc(ret, &max); |
| 1305 | if (temp == NULL) goto mem_error; |
| 1306 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1307 | } |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1308 | if ((IS_UNRESERVED(*(p))) || (IS_RESERVED(*(p)))) |
Daniel Veillard | fdd27d2 | 2002-11-28 11:55:38 +0000 | [diff] [blame] | 1309 | ret[len++] = *p++; |
| 1310 | else { |
| 1311 | int val = *(unsigned char *)p++; |
| 1312 | int hi = val / 0x10, lo = val % 0x10; |
| 1313 | ret[len++] = '%'; |
| 1314 | ret[len++] = hi + (hi > 9? 'A'-10 : '0'); |
| 1315 | ret[len++] = lo + (lo > 9? 'A'-10 : '0'); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1316 | } |
| 1317 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1318 | } |
Daniel Veillard | fdd27d2 | 2002-11-28 11:55:38 +0000 | [diff] [blame] | 1319 | if (len >= max) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1320 | temp = xmlSaveUriRealloc(ret, &max); |
| 1321 | if (temp == NULL) goto mem_error; |
| 1322 | ret = temp; |
Daniel Veillard | fdd27d2 | 2002-11-28 11:55:38 +0000 | [diff] [blame] | 1323 | } |
Daniel Veillard | 13cee4e | 2009-09-05 14:52:55 +0200 | [diff] [blame] | 1324 | ret[len] = 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1325 | return(ret); |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1326 | |
| 1327 | mem_error: |
| 1328 | xmlFree(ret); |
| 1329 | return(NULL); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1330 | } |
| 1331 | |
| 1332 | /** |
| 1333 | * xmlPrintURI: |
| 1334 | * @stream: a FILE* for the output |
| 1335 | * @uri: pointer to an xmlURI |
| 1336 | * |
William M. Brack | f3cf1a1 | 2005-01-06 02:25:59 +0000 | [diff] [blame] | 1337 | * Prints the URI in the stream @stream. |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1338 | */ |
| 1339 | void |
| 1340 | xmlPrintURI(FILE *stream, xmlURIPtr uri) { |
| 1341 | xmlChar *out; |
| 1342 | |
| 1343 | out = xmlSaveUri(uri); |
| 1344 | if (out != NULL) { |
Daniel Veillard | ea7751d | 2002-12-20 00:16:24 +0000 | [diff] [blame] | 1345 | fprintf(stream, "%s", (char *) out); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1346 | xmlFree(out); |
| 1347 | } |
| 1348 | } |
| 1349 | |
| 1350 | /** |
| 1351 | * xmlCleanURI: |
| 1352 | * @uri: pointer to an xmlURI |
| 1353 | * |
| 1354 | * Make sure the xmlURI struct is free of content |
| 1355 | */ |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1356 | static void |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1357 | xmlCleanURI(xmlURIPtr uri) { |
| 1358 | if (uri == NULL) return; |
| 1359 | |
| 1360 | if (uri->scheme != NULL) xmlFree(uri->scheme); |
| 1361 | uri->scheme = NULL; |
| 1362 | if (uri->server != NULL) xmlFree(uri->server); |
| 1363 | uri->server = NULL; |
| 1364 | if (uri->user != NULL) xmlFree(uri->user); |
| 1365 | uri->user = NULL; |
| 1366 | if (uri->path != NULL) xmlFree(uri->path); |
| 1367 | uri->path = NULL; |
| 1368 | if (uri->fragment != NULL) xmlFree(uri->fragment); |
| 1369 | uri->fragment = NULL; |
| 1370 | if (uri->opaque != NULL) xmlFree(uri->opaque); |
| 1371 | uri->opaque = NULL; |
| 1372 | if (uri->authority != NULL) xmlFree(uri->authority); |
| 1373 | uri->authority = NULL; |
| 1374 | if (uri->query != NULL) xmlFree(uri->query); |
| 1375 | uri->query = NULL; |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1376 | if (uri->query_raw != NULL) xmlFree(uri->query_raw); |
| 1377 | uri->query_raw = NULL; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1378 | } |
| 1379 | |
| 1380 | /** |
| 1381 | * xmlFreeURI: |
| 1382 | * @uri: pointer to an xmlURI |
| 1383 | * |
| 1384 | * Free up the xmlURI struct |
| 1385 | */ |
| 1386 | void |
| 1387 | xmlFreeURI(xmlURIPtr uri) { |
| 1388 | if (uri == NULL) return; |
| 1389 | |
| 1390 | if (uri->scheme != NULL) xmlFree(uri->scheme); |
| 1391 | if (uri->server != NULL) xmlFree(uri->server); |
| 1392 | if (uri->user != NULL) xmlFree(uri->user); |
| 1393 | if (uri->path != NULL) xmlFree(uri->path); |
| 1394 | if (uri->fragment != NULL) xmlFree(uri->fragment); |
| 1395 | if (uri->opaque != NULL) xmlFree(uri->opaque); |
| 1396 | if (uri->authority != NULL) xmlFree(uri->authority); |
| 1397 | if (uri->query != NULL) xmlFree(uri->query); |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1398 | if (uri->query_raw != NULL) xmlFree(uri->query_raw); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1399 | xmlFree(uri); |
| 1400 | } |
| 1401 | |
| 1402 | /************************************************************************ |
| 1403 | * * |
| 1404 | * Helper functions * |
| 1405 | * * |
| 1406 | ************************************************************************/ |
| 1407 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1408 | /** |
| 1409 | * xmlNormalizeURIPath: |
| 1410 | * @path: pointer to the path string |
| 1411 | * |
| 1412 | * Applies the 5 normalization steps to a path string--that is, RFC 2396 |
| 1413 | * Section 5.2, steps 6.c through 6.g. |
| 1414 | * |
| 1415 | * Normalization occurs directly on the string, no new allocation is done |
| 1416 | * |
| 1417 | * Returns 0 or an error code |
| 1418 | */ |
| 1419 | int |
| 1420 | xmlNormalizeURIPath(char *path) { |
| 1421 | char *cur, *out; |
| 1422 | |
| 1423 | if (path == NULL) |
| 1424 | return(-1); |
| 1425 | |
| 1426 | /* Skip all initial "/" chars. We want to get to the beginning of the |
| 1427 | * first non-empty segment. |
| 1428 | */ |
| 1429 | cur = path; |
| 1430 | while (cur[0] == '/') |
| 1431 | ++cur; |
| 1432 | if (cur[0] == '\0') |
| 1433 | return(0); |
| 1434 | |
| 1435 | /* Keep everything we've seen so far. */ |
| 1436 | out = cur; |
| 1437 | |
| 1438 | /* |
| 1439 | * Analyze each segment in sequence for cases (c) and (d). |
| 1440 | */ |
| 1441 | while (cur[0] != '\0') { |
| 1442 | /* |
| 1443 | * c) All occurrences of "./", where "." is a complete path segment, |
| 1444 | * are removed from the buffer string. |
| 1445 | */ |
| 1446 | if ((cur[0] == '.') && (cur[1] == '/')) { |
| 1447 | cur += 2; |
Daniel Veillard | fcbd74a | 2001-06-26 07:47:23 +0000 | [diff] [blame] | 1448 | /* '//' normalization should be done at this point too */ |
| 1449 | while (cur[0] == '/') |
| 1450 | cur++; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1451 | continue; |
| 1452 | } |
| 1453 | |
| 1454 | /* |
| 1455 | * d) If the buffer string ends with "." as a complete path segment, |
| 1456 | * that "." is removed. |
| 1457 | */ |
| 1458 | if ((cur[0] == '.') && (cur[1] == '\0')) |
| 1459 | break; |
| 1460 | |
| 1461 | /* Otherwise keep the segment. */ |
| 1462 | while (cur[0] != '/') { |
| 1463 | if (cur[0] == '\0') |
| 1464 | goto done_cd; |
| 1465 | (out++)[0] = (cur++)[0]; |
| 1466 | } |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 1467 | /* normalize // */ |
Daniel Veillard | fcbd74a | 2001-06-26 07:47:23 +0000 | [diff] [blame] | 1468 | while ((cur[0] == '/') && (cur[1] == '/')) |
| 1469 | cur++; |
| 1470 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1471 | (out++)[0] = (cur++)[0]; |
| 1472 | } |
| 1473 | done_cd: |
| 1474 | out[0] = '\0'; |
| 1475 | |
| 1476 | /* Reset to the beginning of the first segment for the next sequence. */ |
| 1477 | cur = path; |
| 1478 | while (cur[0] == '/') |
| 1479 | ++cur; |
| 1480 | if (cur[0] == '\0') |
| 1481 | return(0); |
| 1482 | |
| 1483 | /* |
| 1484 | * Analyze each segment in sequence for cases (e) and (f). |
| 1485 | * |
| 1486 | * e) All occurrences of "<segment>/../", where <segment> is a |
| 1487 | * complete path segment not equal to "..", are removed from the |
| 1488 | * buffer string. Removal of these path segments is performed |
| 1489 | * iteratively, removing the leftmost matching pattern on each |
| 1490 | * iteration, until no matching pattern remains. |
| 1491 | * |
| 1492 | * f) If the buffer string ends with "<segment>/..", where <segment> |
| 1493 | * is a complete path segment not equal to "..", that |
| 1494 | * "<segment>/.." is removed. |
| 1495 | * |
| 1496 | * To satisfy the "iterative" clause in (e), we need to collapse the |
| 1497 | * string every time we find something that needs to be removed. Thus, |
| 1498 | * we don't need to keep two pointers into the string: we only need a |
| 1499 | * "current position" pointer. |
| 1500 | */ |
| 1501 | while (1) { |
Daniel Veillard | 608d0ac | 2003-08-14 22:44:25 +0000 | [diff] [blame] | 1502 | char *segp, *tmp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1503 | |
| 1504 | /* At the beginning of each iteration of this loop, "cur" points to |
| 1505 | * the first character of the segment we want to examine. |
| 1506 | */ |
| 1507 | |
| 1508 | /* Find the end of the current segment. */ |
| 1509 | segp = cur; |
| 1510 | while ((segp[0] != '/') && (segp[0] != '\0')) |
| 1511 | ++segp; |
| 1512 | |
| 1513 | /* If this is the last segment, we're done (we need at least two |
| 1514 | * segments to meet the criteria for the (e) and (f) cases). |
| 1515 | */ |
| 1516 | if (segp[0] == '\0') |
| 1517 | break; |
| 1518 | |
| 1519 | /* If the first segment is "..", or if the next segment _isn't_ "..", |
| 1520 | * keep this segment and try the next one. |
| 1521 | */ |
| 1522 | ++segp; |
| 1523 | if (((cur[0] == '.') && (cur[1] == '.') && (segp == cur+3)) |
| 1524 | || ((segp[0] != '.') || (segp[1] != '.') |
| 1525 | || ((segp[2] != '/') && (segp[2] != '\0')))) { |
| 1526 | cur = segp; |
| 1527 | continue; |
| 1528 | } |
| 1529 | |
| 1530 | /* If we get here, remove this segment and the next one and back up |
| 1531 | * to the previous segment (if there is one), to implement the |
| 1532 | * "iteratively" clause. It's pretty much impossible to back up |
| 1533 | * while maintaining two pointers into the buffer, so just compact |
| 1534 | * the whole buffer now. |
| 1535 | */ |
| 1536 | |
| 1537 | /* If this is the end of the buffer, we're done. */ |
| 1538 | if (segp[2] == '\0') { |
| 1539 | cur[0] = '\0'; |
| 1540 | break; |
| 1541 | } |
Daniel Veillard | 608d0ac | 2003-08-14 22:44:25 +0000 | [diff] [blame] | 1542 | /* Valgrind complained, strcpy(cur, segp + 3); */ |
Nico Weber | cedf84d | 2012-03-05 16:36:59 +0800 | [diff] [blame] | 1543 | /* string will overlap, do not use strcpy */ |
| 1544 | tmp = cur; |
| 1545 | segp += 3; |
| 1546 | while ((*tmp++ = *segp++) != 0) |
| 1547 | ; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1548 | |
| 1549 | /* If there are no previous segments, then keep going from here. */ |
| 1550 | segp = cur; |
| 1551 | while ((segp > path) && ((--segp)[0] == '/')) |
| 1552 | ; |
| 1553 | if (segp == path) |
| 1554 | continue; |
| 1555 | |
| 1556 | /* "segp" is pointing to the end of a previous segment; find it's |
| 1557 | * start. We need to back up to the previous segment and start |
| 1558 | * over with that to handle things like "foo/bar/../..". If we |
| 1559 | * don't do this, then on the first pass we'll remove the "bar/..", |
| 1560 | * but be pointing at the second ".." so we won't realize we can also |
| 1561 | * remove the "foo/..". |
| 1562 | */ |
| 1563 | cur = segp; |
| 1564 | while ((cur > path) && (cur[-1] != '/')) |
| 1565 | --cur; |
| 1566 | } |
| 1567 | out[0] = '\0'; |
| 1568 | |
| 1569 | /* |
| 1570 | * g) If the resulting buffer string still begins with one or more |
| 1571 | * complete path segments of "..", then the reference is |
| 1572 | * considered to be in error. Implementations may handle this |
| 1573 | * error by retaining these components in the resolved path (i.e., |
| 1574 | * treating them as part of the final URI), by removing them from |
| 1575 | * the resolved path (i.e., discarding relative levels above the |
| 1576 | * root), or by avoiding traversal of the reference. |
| 1577 | * |
| 1578 | * We discard them from the final path. |
| 1579 | */ |
| 1580 | if (path[0] == '/') { |
| 1581 | cur = path; |
Daniel Veillard | 9231ff9 | 2003-03-23 22:00:51 +0000 | [diff] [blame] | 1582 | while ((cur[0] == '/') && (cur[1] == '.') && (cur[2] == '.') |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1583 | && ((cur[3] == '/') || (cur[3] == '\0'))) |
| 1584 | cur += 3; |
| 1585 | |
| 1586 | if (cur != path) { |
| 1587 | out = path; |
| 1588 | while (cur[0] != '\0') |
| 1589 | (out++)[0] = (cur++)[0]; |
| 1590 | out[0] = 0; |
| 1591 | } |
| 1592 | } |
| 1593 | |
| 1594 | return(0); |
| 1595 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1596 | |
Daniel Veillard | 966a31e | 2004-05-09 02:58:44 +0000 | [diff] [blame] | 1597 | static int is_hex(char c) { |
| 1598 | if (((c >= '0') && (c <= '9')) || |
| 1599 | ((c >= 'a') && (c <= 'f')) || |
| 1600 | ((c >= 'A') && (c <= 'F'))) |
| 1601 | return(1); |
| 1602 | return(0); |
| 1603 | } |
| 1604 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1605 | /** |
| 1606 | * xmlURIUnescapeString: |
| 1607 | * @str: the string to unescape |
Daniel Veillard | 60087f3 | 2001-10-10 09:45:09 +0000 | [diff] [blame] | 1608 | * @len: the length in bytes to unescape (or <= 0 to indicate full string) |
Daniel Veillard | cbaf399 | 2001-12-31 16:16:02 +0000 | [diff] [blame] | 1609 | * @target: optional destination buffer |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1610 | * |
Daniel Veillard | a44294f | 2007-04-24 08:57:54 +0000 | [diff] [blame] | 1611 | * Unescaping routine, but does not check that the string is an URI. The |
| 1612 | * output is a direct unsigned char translation of %XX values (no encoding) |
Daniel Veillard | 7918765 | 2007-04-24 10:19:52 +0000 | [diff] [blame] | 1613 | * Note that the length of the result can only be smaller or same size as |
| 1614 | * the input string. |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1615 | * |
Daniel Veillard | 7918765 | 2007-04-24 10:19:52 +0000 | [diff] [blame] | 1616 | * Returns a copy of the string, but unescaped, will return NULL only in case |
| 1617 | * of error |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1618 | */ |
| 1619 | char * |
| 1620 | xmlURIUnescapeString(const char *str, int len, char *target) { |
| 1621 | char *ret, *out; |
| 1622 | const char *in; |
| 1623 | |
| 1624 | if (str == NULL) |
| 1625 | return(NULL); |
| 1626 | if (len <= 0) len = strlen(str); |
Daniel Veillard | d229879 | 2003-02-14 16:54:11 +0000 | [diff] [blame] | 1627 | if (len < 0) return(NULL); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1628 | |
| 1629 | if (target == NULL) { |
Daniel Veillard | 3c908dc | 2003-04-19 00:07:51 +0000 | [diff] [blame] | 1630 | ret = (char *) xmlMallocAtomic(len + 1); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1631 | if (ret == NULL) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1632 | xmlURIErrMemory("unescaping URI value\n"); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1633 | return(NULL); |
| 1634 | } |
| 1635 | } else |
| 1636 | ret = target; |
| 1637 | in = str; |
| 1638 | out = ret; |
| 1639 | while(len > 0) { |
Daniel Veillard | 8399ff3 | 2004-09-22 21:57:53 +0000 | [diff] [blame] | 1640 | if ((len > 2) && (*in == '%') && (is_hex(in[1])) && (is_hex(in[2]))) { |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1641 | int c = 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1642 | in++; |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1643 | if ((*in >= '0') && (*in <= '9')) |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1644 | c = (*in - '0'); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1645 | else if ((*in >= 'a') && (*in <= 'f')) |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1646 | c = (*in - 'a') + 10; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1647 | else if ((*in >= 'A') && (*in <= 'F')) |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1648 | c = (*in - 'A') + 10; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1649 | in++; |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1650 | if ((*in >= '0') && (*in <= '9')) |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1651 | c = c * 16 + (*in - '0'); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1652 | else if ((*in >= 'a') && (*in <= 'f')) |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1653 | c = c * 16 + (*in - 'a') + 10; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1654 | else if ((*in >= 'A') && (*in <= 'F')) |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1655 | c = c * 16 + (*in - 'A') + 10; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1656 | in++; |
| 1657 | len -= 3; |
Elliott Hughes | ecdab2a | 2022-02-23 14:33:50 -0800 | [diff] [blame] | 1658 | *out++ = (char) c; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1659 | } else { |
| 1660 | *out++ = *in++; |
| 1661 | len--; |
| 1662 | } |
| 1663 | } |
| 1664 | *out = 0; |
| 1665 | return(ret); |
| 1666 | } |
| 1667 | |
| 1668 | /** |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1669 | * xmlURIEscapeStr: |
| 1670 | * @str: string to escape |
| 1671 | * @list: exception list string of chars not to escape |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1672 | * |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1673 | * This routine escapes a string to hex, ignoring reserved characters (a-z) |
| 1674 | * and the characters in the exception list. |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1675 | * |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1676 | * Returns a new escaped string or NULL in case of error. |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1677 | */ |
| 1678 | xmlChar * |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1679 | xmlURIEscapeStr(const xmlChar *str, const xmlChar *list) { |
| 1680 | xmlChar *ret, ch; |
Daniel Veillard | ed86dc2 | 2008-04-24 11:58:41 +0000 | [diff] [blame] | 1681 | xmlChar *temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1682 | const xmlChar *in; |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1683 | int len, out; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1684 | |
| 1685 | if (str == NULL) |
| 1686 | return(NULL); |
William M. Brack | f3cf1a1 | 2005-01-06 02:25:59 +0000 | [diff] [blame] | 1687 | if (str[0] == 0) |
| 1688 | return(xmlStrdup(str)); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1689 | len = xmlStrlen(str); |
Daniel Veillard | e645e8c | 2002-10-22 17:35:37 +0000 | [diff] [blame] | 1690 | if (!(len > 0)) return(NULL); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1691 | |
| 1692 | len += 20; |
Daniel Veillard | 3c908dc | 2003-04-19 00:07:51 +0000 | [diff] [blame] | 1693 | ret = (xmlChar *) xmlMallocAtomic(len); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1694 | if (ret == NULL) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1695 | xmlURIErrMemory("escaping URI value\n"); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1696 | return(NULL); |
| 1697 | } |
| 1698 | in = (const xmlChar *) str; |
| 1699 | out = 0; |
| 1700 | while(*in != 0) { |
| 1701 | if (len - out <= 3) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1702 | temp = xmlSaveUriRealloc(ret, &len); |
Daniel Veillard | ed86dc2 | 2008-04-24 11:58:41 +0000 | [diff] [blame] | 1703 | if (temp == NULL) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1704 | xmlURIErrMemory("escaping URI value\n"); |
Daniel Veillard | ed86dc2 | 2008-04-24 11:58:41 +0000 | [diff] [blame] | 1705 | xmlFree(ret); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1706 | return(NULL); |
| 1707 | } |
Daniel Veillard | ed86dc2 | 2008-04-24 11:58:41 +0000 | [diff] [blame] | 1708 | ret = temp; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1709 | } |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1710 | |
| 1711 | ch = *in; |
| 1712 | |
Daniel Veillard | eb475a3 | 2002-04-14 22:00:22 +0000 | [diff] [blame] | 1713 | if ((ch != '@') && (!IS_UNRESERVED(ch)) && (!xmlStrchr(list, ch))) { |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1714 | unsigned char val; |
| 1715 | ret[out++] = '%'; |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1716 | val = ch >> 4; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1717 | if (val <= 9) |
| 1718 | ret[out++] = '0' + val; |
| 1719 | else |
| 1720 | ret[out++] = 'A' + val - 0xA; |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1721 | val = ch & 0xF; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1722 | if (val <= 9) |
| 1723 | ret[out++] = '0' + val; |
| 1724 | else |
| 1725 | ret[out++] = 'A' + val - 0xA; |
| 1726 | in++; |
| 1727 | } else { |
| 1728 | ret[out++] = *in++; |
| 1729 | } |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1730 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1731 | } |
| 1732 | ret[out] = 0; |
| 1733 | return(ret); |
| 1734 | } |
| 1735 | |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1736 | /** |
| 1737 | * xmlURIEscape: |
| 1738 | * @str: the string of the URI to escape |
| 1739 | * |
| 1740 | * Escaping routine, does not do validity checks ! |
| 1741 | * It will try to escape the chars needing this, but this is heuristic |
| 1742 | * based it's impossible to be sure. |
| 1743 | * |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1744 | * Returns an copy of the string, but escaped |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1745 | * |
| 1746 | * 25 May 2001 |
| 1747 | * Uses xmlParseURI and xmlURIEscapeStr to try to escape correctly |
| 1748 | * according to RFC2396. |
| 1749 | * - Carl Douglas |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1750 | */ |
| 1751 | xmlChar * |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1752 | xmlURIEscape(const xmlChar * str) |
| 1753 | { |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1754 | xmlChar *ret, *segment = NULL; |
| 1755 | xmlURIPtr uri; |
Daniel Veillard | bb6808e | 2001-10-29 23:59:27 +0000 | [diff] [blame] | 1756 | int ret2; |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1757 | |
Daniel Veillard | bb6808e | 2001-10-29 23:59:27 +0000 | [diff] [blame] | 1758 | if (str == NULL) |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1759 | return (NULL); |
Daniel Veillard | bb6808e | 2001-10-29 23:59:27 +0000 | [diff] [blame] | 1760 | |
| 1761 | uri = xmlCreateURI(); |
| 1762 | if (uri != NULL) { |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1763 | /* |
| 1764 | * Allow escaping errors in the unescaped form |
| 1765 | */ |
| 1766 | uri->cleanup = 1; |
| 1767 | ret2 = xmlParseURIReference(uri, (const char *)str); |
Daniel Veillard | bb6808e | 2001-10-29 23:59:27 +0000 | [diff] [blame] | 1768 | if (ret2) { |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1769 | xmlFreeURI(uri); |
| 1770 | return (NULL); |
| 1771 | } |
Daniel Veillard | bb6808e | 2001-10-29 23:59:27 +0000 | [diff] [blame] | 1772 | } |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1773 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1774 | if (!uri) |
| 1775 | return NULL; |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1776 | |
| 1777 | ret = NULL; |
| 1778 | |
Elliott Hughes | daae4d5 | 2020-11-09 14:19:21 -0800 | [diff] [blame] | 1779 | #define NULLCHK(p) if(!p) { \ |
| 1780 | xmlURIErrMemory("escaping URI value\n"); \ |
| 1781 | xmlFreeURI(uri); \ |
| 1782 | xmlFree(ret); \ |
| 1783 | return NULL; } \ |
| 1784 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1785 | if (uri->scheme) { |
| 1786 | segment = xmlURIEscapeStr(BAD_CAST uri->scheme, BAD_CAST "+-."); |
| 1787 | NULLCHK(segment) |
| 1788 | ret = xmlStrcat(ret, segment); |
| 1789 | ret = xmlStrcat(ret, BAD_CAST ":"); |
| 1790 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1791 | } |
| 1792 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1793 | if (uri->authority) { |
| 1794 | segment = |
| 1795 | xmlURIEscapeStr(BAD_CAST uri->authority, BAD_CAST "/?;:@"); |
| 1796 | NULLCHK(segment) |
| 1797 | ret = xmlStrcat(ret, BAD_CAST "//"); |
| 1798 | ret = xmlStrcat(ret, segment); |
| 1799 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1800 | } |
| 1801 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1802 | if (uri->user) { |
| 1803 | segment = xmlURIEscapeStr(BAD_CAST uri->user, BAD_CAST ";:&=+$,"); |
| 1804 | NULLCHK(segment) |
Elliott Hughes | daae4d5 | 2020-11-09 14:19:21 -0800 | [diff] [blame] | 1805 | ret = xmlStrcat(ret,BAD_CAST "//"); |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1806 | ret = xmlStrcat(ret, segment); |
| 1807 | ret = xmlStrcat(ret, BAD_CAST "@"); |
| 1808 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1809 | } |
| 1810 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1811 | if (uri->server) { |
| 1812 | segment = xmlURIEscapeStr(BAD_CAST uri->server, BAD_CAST "/?;:@"); |
| 1813 | NULLCHK(segment) |
Elliott Hughes | daae4d5 | 2020-11-09 14:19:21 -0800 | [diff] [blame] | 1814 | if (uri->user == NULL) |
| 1815 | ret = xmlStrcat(ret, BAD_CAST "//"); |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1816 | ret = xmlStrcat(ret, segment); |
| 1817 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1818 | } |
| 1819 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1820 | if (uri->port) { |
| 1821 | xmlChar port[10]; |
| 1822 | |
Daniel Veillard | 43d3f61 | 2001-11-10 11:57:23 +0000 | [diff] [blame] | 1823 | snprintf((char *) port, 10, "%d", uri->port); |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1824 | ret = xmlStrcat(ret, BAD_CAST ":"); |
| 1825 | ret = xmlStrcat(ret, port); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1826 | } |
| 1827 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1828 | if (uri->path) { |
| 1829 | segment = |
| 1830 | xmlURIEscapeStr(BAD_CAST uri->path, BAD_CAST ":@&=+$,/?;"); |
| 1831 | NULLCHK(segment) |
| 1832 | ret = xmlStrcat(ret, segment); |
| 1833 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1834 | } |
| 1835 | |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1836 | if (uri->query_raw) { |
| 1837 | ret = xmlStrcat(ret, BAD_CAST "?"); |
| 1838 | ret = xmlStrcat(ret, BAD_CAST uri->query_raw); |
| 1839 | } |
| 1840 | else if (uri->query) { |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1841 | segment = |
| 1842 | xmlURIEscapeStr(BAD_CAST uri->query, BAD_CAST ";/?:@&=+,$"); |
| 1843 | NULLCHK(segment) |
| 1844 | ret = xmlStrcat(ret, BAD_CAST "?"); |
| 1845 | ret = xmlStrcat(ret, segment); |
| 1846 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1847 | } |
| 1848 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1849 | if (uri->opaque) { |
| 1850 | segment = xmlURIEscapeStr(BAD_CAST uri->opaque, BAD_CAST ""); |
| 1851 | NULLCHK(segment) |
| 1852 | ret = xmlStrcat(ret, segment); |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1853 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1854 | } |
| 1855 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1856 | if (uri->fragment) { |
| 1857 | segment = xmlURIEscapeStr(BAD_CAST uri->fragment, BAD_CAST "#"); |
| 1858 | NULLCHK(segment) |
| 1859 | ret = xmlStrcat(ret, BAD_CAST "#"); |
| 1860 | ret = xmlStrcat(ret, segment); |
| 1861 | xmlFree(segment); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1862 | } |
Daniel Veillard | 43d3f61 | 2001-11-10 11:57:23 +0000 | [diff] [blame] | 1863 | |
| 1864 | xmlFreeURI(uri); |
Daniel Veillard | 6278fb5 | 2001-05-25 07:38:41 +0000 | [diff] [blame] | 1865 | #undef NULLCHK |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1866 | |
Daniel Veillard | 4def3bd | 2001-10-30 09:47:47 +0000 | [diff] [blame] | 1867 | return (ret); |
Daniel Veillard | 8514c67 | 2001-05-23 10:29:12 +0000 | [diff] [blame] | 1868 | } |
| 1869 | |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1870 | /************************************************************************ |
| 1871 | * * |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1872 | * Public functions * |
| 1873 | * * |
| 1874 | ************************************************************************/ |
| 1875 | |
| 1876 | /** |
| 1877 | * xmlBuildURI: |
| 1878 | * @URI: the URI instance found in the document |
| 1879 | * @base: the base value |
| 1880 | * |
| 1881 | * Computes he final URI of the reference done by checking that |
| 1882 | * the given URI is valid, and building the final URI using the |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1883 | * base URI. This is processed according to section 5.2 of the |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1884 | * RFC 2396 |
| 1885 | * |
| 1886 | * 5.2. Resolving Relative References to Absolute Form |
| 1887 | * |
| 1888 | * Returns a new URI string (to be freed by the caller) or NULL in case |
| 1889 | * of error. |
| 1890 | */ |
| 1891 | xmlChar * |
| 1892 | xmlBuildURI(const xmlChar *URI, const xmlChar *base) { |
| 1893 | xmlChar *val = NULL; |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 1894 | int ret, len, indx, cur, out; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1895 | xmlURIPtr ref = NULL; |
| 1896 | xmlURIPtr bas = NULL; |
| 1897 | xmlURIPtr res = NULL; |
| 1898 | |
| 1899 | /* |
| 1900 | * 1) The URI reference is parsed into the potential four components and |
| 1901 | * fragment identifier, as described in Section 4.3. |
| 1902 | * |
| 1903 | * NOTE that a completely empty URI is treated by modern browsers |
| 1904 | * as a reference to "." rather than as a synonym for the current |
| 1905 | * URI. Should we do that here? |
| 1906 | */ |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1907 | if (URI == NULL) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1908 | ret = -1; |
| 1909 | else { |
| 1910 | if (*URI) { |
| 1911 | ref = xmlCreateURI(); |
| 1912 | if (ref == NULL) |
| 1913 | goto done; |
| 1914 | ret = xmlParseURIReference(ref, (const char *) URI); |
| 1915 | } |
| 1916 | else |
| 1917 | ret = 0; |
| 1918 | } |
| 1919 | if (ret != 0) |
| 1920 | goto done; |
Daniel Veillard | 7b4b2f9 | 2003-01-06 13:11:20 +0000 | [diff] [blame] | 1921 | if ((ref != NULL) && (ref->scheme != NULL)) { |
| 1922 | /* |
| 1923 | * The URI is absolute don't modify. |
| 1924 | */ |
| 1925 | val = xmlStrdup(URI); |
| 1926 | goto done; |
| 1927 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1928 | if (base == NULL) |
| 1929 | ret = -1; |
| 1930 | else { |
| 1931 | bas = xmlCreateURI(); |
| 1932 | if (bas == NULL) |
| 1933 | goto done; |
| 1934 | ret = xmlParseURIReference(bas, (const char *) base); |
| 1935 | } |
| 1936 | if (ret != 0) { |
| 1937 | if (ref) |
| 1938 | val = xmlSaveUri(ref); |
| 1939 | goto done; |
| 1940 | } |
| 1941 | if (ref == NULL) { |
| 1942 | /* |
| 1943 | * the base fragment must be ignored |
| 1944 | */ |
| 1945 | if (bas->fragment != NULL) { |
| 1946 | xmlFree(bas->fragment); |
| 1947 | bas->fragment = NULL; |
| 1948 | } |
| 1949 | val = xmlSaveUri(bas); |
| 1950 | goto done; |
| 1951 | } |
| 1952 | |
| 1953 | /* |
| 1954 | * 2) If the path component is empty and the scheme, authority, and |
| 1955 | * query components are undefined, then it is a reference to the |
| 1956 | * current document and we are done. Otherwise, the reference URI's |
| 1957 | * query and fragment components are defined as found (or not found) |
| 1958 | * within the URI reference and not inherited from the base URI. |
| 1959 | * |
| 1960 | * NOTE that in modern browsers, the parsing differs from the above |
| 1961 | * in the following aspect: the query component is allowed to be |
| 1962 | * defined while still treating this as a reference to the current |
| 1963 | * document. |
| 1964 | */ |
| 1965 | res = xmlCreateURI(); |
| 1966 | if (res == NULL) |
| 1967 | goto done; |
| 1968 | if ((ref->scheme == NULL) && (ref->path == NULL) && |
| 1969 | ((ref->authority == NULL) && (ref->server == NULL))) { |
| 1970 | if (bas->scheme != NULL) |
| 1971 | res->scheme = xmlMemStrdup(bas->scheme); |
| 1972 | if (bas->authority != NULL) |
| 1973 | res->authority = xmlMemStrdup(bas->authority); |
Daniel Veillard | 3daee3f | 2017-08-28 21:12:14 +0200 | [diff] [blame] | 1974 | else if ((bas->server != NULL) || (bas->port == -1)) { |
| 1975 | if (bas->server != NULL) |
| 1976 | res->server = xmlMemStrdup(bas->server); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1977 | if (bas->user != NULL) |
| 1978 | res->user = xmlMemStrdup(bas->user); |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 1979 | res->port = bas->port; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1980 | } |
| 1981 | if (bas->path != NULL) |
| 1982 | res->path = xmlMemStrdup(bas->path); |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1983 | if (ref->query_raw != NULL) |
| 1984 | res->query_raw = xmlMemStrdup (ref->query_raw); |
| 1985 | else if (ref->query != NULL) |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1986 | res->query = xmlMemStrdup(ref->query); |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 1987 | else if (bas->query_raw != NULL) |
| 1988 | res->query_raw = xmlMemStrdup(bas->query_raw); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1989 | else if (bas->query != NULL) |
| 1990 | res->query = xmlMemStrdup(bas->query); |
| 1991 | if (ref->fragment != NULL) |
| 1992 | res->fragment = xmlMemStrdup(ref->fragment); |
| 1993 | goto step_7; |
| 1994 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 1995 | |
| 1996 | /* |
| 1997 | * 3) If the scheme component is defined, indicating that the reference |
| 1998 | * starts with a scheme name, then the reference is interpreted as an |
| 1999 | * absolute URI and we are done. Otherwise, the reference URI's |
| 2000 | * scheme is inherited from the base URI's scheme component. |
| 2001 | */ |
| 2002 | if (ref->scheme != NULL) { |
| 2003 | val = xmlSaveUri(ref); |
| 2004 | goto done; |
| 2005 | } |
| 2006 | if (bas->scheme != NULL) |
| 2007 | res->scheme = xmlMemStrdup(bas->scheme); |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2008 | |
Daniel Veillard | a1413b8 | 2007-04-26 08:33:28 +0000 | [diff] [blame] | 2009 | if (ref->query_raw != NULL) |
| 2010 | res->query_raw = xmlMemStrdup(ref->query_raw); |
| 2011 | else if (ref->query != NULL) |
Daniel Veillard | 9231ff9 | 2003-03-23 22:00:51 +0000 | [diff] [blame] | 2012 | res->query = xmlMemStrdup(ref->query); |
| 2013 | if (ref->fragment != NULL) |
| 2014 | res->fragment = xmlMemStrdup(ref->fragment); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2015 | |
| 2016 | /* |
| 2017 | * 4) If the authority component is defined, then the reference is a |
| 2018 | * network-path and we skip to step 7. Otherwise, the reference |
| 2019 | * URI's authority is inherited from the base URI's authority |
| 2020 | * component, which will also be undefined if the URI scheme does not |
| 2021 | * use an authority component. |
| 2022 | */ |
| 2023 | if ((ref->authority != NULL) || (ref->server != NULL)) { |
| 2024 | if (ref->authority != NULL) |
| 2025 | res->authority = xmlMemStrdup(ref->authority); |
| 2026 | else { |
| 2027 | res->server = xmlMemStrdup(ref->server); |
| 2028 | if (ref->user != NULL) |
| 2029 | res->user = xmlMemStrdup(ref->user); |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2030 | res->port = ref->port; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2031 | } |
| 2032 | if (ref->path != NULL) |
| 2033 | res->path = xmlMemStrdup(ref->path); |
| 2034 | goto step_7; |
| 2035 | } |
| 2036 | if (bas->authority != NULL) |
| 2037 | res->authority = xmlMemStrdup(bas->authority); |
Daniel Veillard | 3daee3f | 2017-08-28 21:12:14 +0200 | [diff] [blame] | 2038 | else if ((bas->server != NULL) || (bas->port == -1)) { |
| 2039 | if (bas->server != NULL) |
| 2040 | res->server = xmlMemStrdup(bas->server); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2041 | if (bas->user != NULL) |
| 2042 | res->user = xmlMemStrdup(bas->user); |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2043 | res->port = bas->port; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2044 | } |
| 2045 | |
| 2046 | /* |
| 2047 | * 5) If the path component begins with a slash character ("/"), then |
| 2048 | * the reference is an absolute-path and we skip to step 7. |
| 2049 | */ |
| 2050 | if ((ref->path != NULL) && (ref->path[0] == '/')) { |
| 2051 | res->path = xmlMemStrdup(ref->path); |
| 2052 | goto step_7; |
| 2053 | } |
| 2054 | |
| 2055 | |
| 2056 | /* |
| 2057 | * 6) If this step is reached, then we are resolving a relative-path |
| 2058 | * reference. The relative path needs to be merged with the base |
| 2059 | * URI's path. Although there are many ways to do this, we will |
| 2060 | * describe a simple method using a separate string buffer. |
| 2061 | * |
| 2062 | * Allocate a buffer large enough for the result string. |
| 2063 | */ |
| 2064 | len = 2; /* extra / and 0 */ |
| 2065 | if (ref->path != NULL) |
| 2066 | len += strlen(ref->path); |
| 2067 | if (bas->path != NULL) |
| 2068 | len += strlen(bas->path); |
Daniel Veillard | 3c908dc | 2003-04-19 00:07:51 +0000 | [diff] [blame] | 2069 | res->path = (char *) xmlMallocAtomic(len); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2070 | if (res->path == NULL) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2071 | xmlURIErrMemory("resolving URI against base\n"); |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2072 | goto done; |
| 2073 | } |
| 2074 | res->path[0] = 0; |
| 2075 | |
| 2076 | /* |
| 2077 | * a) All but the last segment of the base URI's path component is |
| 2078 | * copied to the buffer. In other words, any characters after the |
| 2079 | * last (right-most) slash character, if any, are excluded. |
| 2080 | */ |
| 2081 | cur = 0; |
| 2082 | out = 0; |
| 2083 | if (bas->path != NULL) { |
| 2084 | while (bas->path[cur] != 0) { |
| 2085 | while ((bas->path[cur] != 0) && (bas->path[cur] != '/')) |
| 2086 | cur++; |
| 2087 | if (bas->path[cur] == 0) |
| 2088 | break; |
| 2089 | |
| 2090 | cur++; |
| 2091 | while (out < cur) { |
| 2092 | res->path[out] = bas->path[out]; |
| 2093 | out++; |
| 2094 | } |
| 2095 | } |
| 2096 | } |
| 2097 | res->path[out] = 0; |
| 2098 | |
| 2099 | /* |
| 2100 | * b) The reference's path component is appended to the buffer |
| 2101 | * string. |
| 2102 | */ |
| 2103 | if (ref->path != NULL && ref->path[0] != 0) { |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2104 | indx = 0; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2105 | /* |
| 2106 | * Ensure the path includes a '/' |
| 2107 | */ |
| 2108 | if ((out == 0) && (bas->server != NULL)) |
| 2109 | res->path[out++] = '/'; |
Daniel Veillard | 56a4cb8 | 2001-03-24 17:00:36 +0000 | [diff] [blame] | 2110 | while (ref->path[indx] != 0) { |
| 2111 | res->path[out++] = ref->path[indx++]; |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2112 | } |
| 2113 | } |
| 2114 | res->path[out] = 0; |
| 2115 | |
| 2116 | /* |
| 2117 | * Steps c) to h) are really path normalization steps |
| 2118 | */ |
| 2119 | xmlNormalizeURIPath(res->path); |
| 2120 | |
| 2121 | step_7: |
| 2122 | |
| 2123 | /* |
| 2124 | * 7) The resulting URI components, including any inherited from the |
| 2125 | * base URI, are recombined to give the absolute form of the URI |
| 2126 | * reference. |
| 2127 | */ |
| 2128 | val = xmlSaveUri(res); |
| 2129 | |
| 2130 | done: |
| 2131 | if (ref != NULL) |
| 2132 | xmlFreeURI(ref); |
| 2133 | if (bas != NULL) |
| 2134 | xmlFreeURI(bas); |
| 2135 | if (res != NULL) |
| 2136 | xmlFreeURI(res); |
| 2137 | return(val); |
| 2138 | } |
| 2139 | |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2140 | /** |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2141 | * xmlBuildRelativeURI: |
| 2142 | * @URI: the URI reference under consideration |
| 2143 | * @base: the base value |
| 2144 | * |
| 2145 | * Expresses the URI of the reference in terms relative to the |
| 2146 | * base. Some examples of this operation include: |
| 2147 | * base = "http://site1.com/docs/book1.html" |
| 2148 | * URI input URI returned |
| 2149 | * docs/pic1.gif pic1.gif |
| 2150 | * docs/img/pic1.gif img/pic1.gif |
| 2151 | * img/pic1.gif ../img/pic1.gif |
| 2152 | * http://site1.com/docs/pic1.gif pic1.gif |
| 2153 | * http://site2.com/docs/pic1.gif http://site2.com/docs/pic1.gif |
| 2154 | * |
| 2155 | * base = "docs/book1.html" |
| 2156 | * URI input URI returned |
| 2157 | * docs/pic1.gif pic1.gif |
| 2158 | * docs/img/pic1.gif img/pic1.gif |
| 2159 | * img/pic1.gif ../img/pic1.gif |
| 2160 | * http://site1.com/docs/pic1.gif http://site1.com/docs/pic1.gif |
| 2161 | * |
| 2162 | * |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 2163 | * Note: if the URI reference is really weird or complicated, it may be |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2164 | * worthwhile to first convert it into a "nice" one by calling |
| 2165 | * xmlBuildURI (using 'base') before calling this routine, |
| 2166 | * since this routine (for reasonable efficiency) assumes URI has |
| 2167 | * already been through some validation. |
| 2168 | * |
| 2169 | * Returns a new URI string (to be freed by the caller) or NULL in case |
| 2170 | * error. |
| 2171 | */ |
| 2172 | xmlChar * |
| 2173 | xmlBuildRelativeURI (const xmlChar * URI, const xmlChar * base) |
| 2174 | { |
| 2175 | xmlChar *val = NULL; |
| 2176 | int ret; |
| 2177 | int ix; |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2178 | int nbslash = 0; |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2179 | int len; |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2180 | xmlURIPtr ref = NULL; |
| 2181 | xmlURIPtr bas = NULL; |
| 2182 | xmlChar *bptr, *uptr, *vptr; |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2183 | int remove_path = 0; |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2184 | |
| 2185 | if ((URI == NULL) || (*URI == 0)) |
| 2186 | return NULL; |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2187 | |
| 2188 | /* |
| 2189 | * First parse URI into a standard form |
| 2190 | */ |
| 2191 | ref = xmlCreateURI (); |
| 2192 | if (ref == NULL) |
| 2193 | return NULL; |
William M. Brack | 38c4b33 | 2005-07-25 18:39:34 +0000 | [diff] [blame] | 2194 | /* If URI not already in "relative" form */ |
| 2195 | if (URI[0] != '.') { |
| 2196 | ret = xmlParseURIReference (ref, (const char *) URI); |
| 2197 | if (ret != 0) |
| 2198 | goto done; /* Error in URI, return NULL */ |
| 2199 | } else |
| 2200 | ref->path = (char *)xmlStrdup(URI); |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2201 | |
| 2202 | /* |
| 2203 | * Next parse base into the same standard form |
| 2204 | */ |
| 2205 | if ((base == NULL) || (*base == 0)) { |
| 2206 | val = xmlStrdup (URI); |
| 2207 | goto done; |
| 2208 | } |
| 2209 | bas = xmlCreateURI (); |
| 2210 | if (bas == NULL) |
| 2211 | goto done; |
William M. Brack | 38c4b33 | 2005-07-25 18:39:34 +0000 | [diff] [blame] | 2212 | if (base[0] != '.') { |
| 2213 | ret = xmlParseURIReference (bas, (const char *) base); |
| 2214 | if (ret != 0) |
| 2215 | goto done; /* Error in base, return NULL */ |
| 2216 | } else |
| 2217 | bas->path = (char *)xmlStrdup(base); |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2218 | |
| 2219 | /* |
| 2220 | * If the scheme / server on the URI differs from the base, |
| 2221 | * just return the URI |
| 2222 | */ |
| 2223 | if ((ref->scheme != NULL) && |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2224 | ((bas->scheme == NULL) || |
| 2225 | (xmlStrcmp ((xmlChar *)bas->scheme, (xmlChar *)ref->scheme)) || |
| 2226 | (xmlStrcmp ((xmlChar *)bas->server, (xmlChar *)ref->server)))) { |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2227 | val = xmlStrdup (URI); |
| 2228 | goto done; |
| 2229 | } |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2230 | if (xmlStrEqual((xmlChar *)bas->path, (xmlChar *)ref->path)) { |
| 2231 | val = xmlStrdup(BAD_CAST ""); |
| 2232 | goto done; |
| 2233 | } |
| 2234 | if (bas->path == NULL) { |
| 2235 | val = xmlStrdup((xmlChar *)ref->path); |
| 2236 | goto done; |
| 2237 | } |
| 2238 | if (ref->path == NULL) { |
| 2239 | ref->path = (char *) "/"; |
| 2240 | remove_path = 1; |
| 2241 | } |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2242 | |
| 2243 | /* |
| 2244 | * At this point (at last!) we can compare the two paths |
| 2245 | * |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2246 | * First we take care of the special case where either of the |
| 2247 | * two path components may be missing (bug 316224) |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2248 | */ |
| 2249 | bptr = (xmlChar *)bas->path; |
Elliott Hughes | 7fbecab | 2019-01-10 16:42:03 -0800 | [diff] [blame] | 2250 | { |
Nick Wellnhofer | 91e5496 | 2017-06-08 18:25:30 +0200 | [diff] [blame] | 2251 | xmlChar *rptr = (xmlChar *) ref->path; |
| 2252 | int pos = 0; |
| 2253 | |
| 2254 | /* |
| 2255 | * Next we compare the two strings and find where they first differ |
| 2256 | */ |
| 2257 | if ((*rptr == '.') && (rptr[1] == '/')) |
| 2258 | rptr += 2; |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2259 | if ((*bptr == '.') && (bptr[1] == '/')) |
| 2260 | bptr += 2; |
Nick Wellnhofer | 91e5496 | 2017-06-08 18:25:30 +0200 | [diff] [blame] | 2261 | else if ((*bptr == '/') && (*rptr != '/')) |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2262 | bptr++; |
Nick Wellnhofer | 91e5496 | 2017-06-08 18:25:30 +0200 | [diff] [blame] | 2263 | while ((bptr[pos] == rptr[pos]) && (bptr[pos] != 0)) |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2264 | pos++; |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2265 | |
Nick Wellnhofer | 91e5496 | 2017-06-08 18:25:30 +0200 | [diff] [blame] | 2266 | if (bptr[pos] == rptr[pos]) { |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2267 | val = xmlStrdup(BAD_CAST ""); |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2268 | goto done; /* (I can't imagine why anyone would do this) */ |
| 2269 | } |
| 2270 | |
| 2271 | /* |
| 2272 | * In URI, "back up" to the last '/' encountered. This will be the |
| 2273 | * beginning of the "unique" suffix of URI |
| 2274 | */ |
| 2275 | ix = pos; |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2276 | for (; ix > 0; ix--) { |
Elliott Hughes | 7fbecab | 2019-01-10 16:42:03 -0800 | [diff] [blame] | 2277 | if (rptr[ix - 1] == '/') |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2278 | break; |
| 2279 | } |
Elliott Hughes | 7fbecab | 2019-01-10 16:42:03 -0800 | [diff] [blame] | 2280 | uptr = (xmlChar *)&rptr[ix]; |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2281 | |
| 2282 | /* |
| 2283 | * In base, count the number of '/' from the differing point |
| 2284 | */ |
Elliott Hughes | 7fbecab | 2019-01-10 16:42:03 -0800 | [diff] [blame] | 2285 | for (; bptr[ix] != 0; ix++) { |
| 2286 | if (bptr[ix] == '/') |
| 2287 | nbslash++; |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2288 | } |
Elliott Hughes | 7fbecab | 2019-01-10 16:42:03 -0800 | [diff] [blame] | 2289 | |
| 2290 | /* |
| 2291 | * e.g: URI="foo/" base="foo/bar" -> "./" |
| 2292 | */ |
| 2293 | if (nbslash == 0 && !uptr[0]) { |
| 2294 | val = xmlStrdup(BAD_CAST "./"); |
| 2295 | goto done; |
| 2296 | } |
| 2297 | |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2298 | len = xmlStrlen (uptr) + 1; |
| 2299 | } |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2300 | |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2301 | if (nbslash == 0) { |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2302 | if (uptr != NULL) |
William M. Brack | 5042019 | 2007-07-20 01:09:08 +0000 | [diff] [blame] | 2303 | /* exception characters from xmlSaveUri */ |
| 2304 | val = xmlURIEscapeStr(uptr, BAD_CAST "/;&=+$,"); |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2305 | goto done; |
| 2306 | } |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2307 | |
| 2308 | /* |
| 2309 | * Allocate just enough space for the returned string - |
| 2310 | * length of the remainder of the URI, plus enough space |
| 2311 | * for the "../" groups, plus one for the terminator |
| 2312 | */ |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2313 | val = (xmlChar *) xmlMalloc (len + 3 * nbslash); |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2314 | if (val == NULL) { |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2315 | xmlURIErrMemory("building relative URI\n"); |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2316 | goto done; |
| 2317 | } |
| 2318 | vptr = val; |
| 2319 | /* |
| 2320 | * Put in as many "../" as needed |
| 2321 | */ |
| 2322 | for (; nbslash>0; nbslash--) { |
| 2323 | *vptr++ = '.'; |
| 2324 | *vptr++ = '.'; |
| 2325 | *vptr++ = '/'; |
| 2326 | } |
| 2327 | /* |
| 2328 | * Finish up with the end of the URI |
| 2329 | */ |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2330 | if (uptr != NULL) { |
| 2331 | if ((vptr > val) && (len > 0) && |
| 2332 | (uptr[0] == '/') && (vptr[-1] == '/')) { |
| 2333 | memcpy (vptr, uptr + 1, len - 1); |
| 2334 | vptr[len - 2] = 0; |
| 2335 | } else { |
| 2336 | memcpy (vptr, uptr, len); |
| 2337 | vptr[len - 1] = 0; |
| 2338 | } |
| 2339 | } else { |
William M. Brack | 820d5ed | 2005-09-14 05:24:27 +0000 | [diff] [blame] | 2340 | vptr[len - 1] = 0; |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2341 | } |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2342 | |
William M. Brack | 5042019 | 2007-07-20 01:09:08 +0000 | [diff] [blame] | 2343 | /* escape the freshly-built path */ |
| 2344 | vptr = val; |
| 2345 | /* exception characters from xmlSaveUri */ |
| 2346 | val = xmlURIEscapeStr(vptr, BAD_CAST "/;&=+$,"); |
| 2347 | xmlFree(vptr); |
| 2348 | |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2349 | done: |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2350 | /* |
| 2351 | * Free the working variables |
| 2352 | */ |
Daniel Veillard | 0f7b331 | 2005-09-15 14:15:20 +0000 | [diff] [blame] | 2353 | if (remove_path != 0) |
| 2354 | ref->path = NULL; |
William M. Brack | f7789b1 | 2004-06-07 08:57:27 +0000 | [diff] [blame] | 2355 | if (ref != NULL) |
| 2356 | xmlFreeURI (ref); |
| 2357 | if (bas != NULL) |
| 2358 | xmlFreeURI (bas); |
| 2359 | |
| 2360 | return val; |
| 2361 | } |
| 2362 | |
| 2363 | /** |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2364 | * xmlCanonicPath: |
| 2365 | * @path: the resource locator in a filesystem notation |
| 2366 | * |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2367 | * Constructs a canonic path from the specified path. |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2368 | * |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2369 | * Returns a new canonic path, or a duplicate of the path parameter if the |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2370 | * construction fails. The caller is responsible for freeing the memory occupied |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2371 | * by the returned string. If there is insufficient memory available, or the |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2372 | * argument is NULL, the function returns NULL. |
| 2373 | */ |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2374 | #define IS_WINDOWS_PATH(p) \ |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2375 | ((p != NULL) && \ |
| 2376 | (((p[0] >= 'a') && (p[0] <= 'z')) || \ |
| 2377 | ((p[0] >= 'A') && (p[0] <= 'Z'))) && \ |
| 2378 | (p[1] == ':') && ((p[2] == '/') || (p[2] == '\\'))) |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2379 | xmlChar * |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2380 | xmlCanonicPath(const xmlChar *path) |
| 2381 | { |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2382 | /* |
| 2383 | * For Windows implementations, additional work needs to be done to |
| 2384 | * replace backslashes in pathnames with "forward slashes" |
| 2385 | */ |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2386 | #if defined(_WIN32) && !defined(__CYGWIN__) |
Igor Zlatkovic | ce07616 | 2003-02-23 13:39:39 +0000 | [diff] [blame] | 2387 | int len = 0; |
Nick Wellnhofer | 41c0a13 | 2017-10-09 13:32:20 +0200 | [diff] [blame] | 2388 | char *p = NULL; |
Daniel Veillard | c64b8e9 | 2003-02-24 11:47:13 +0000 | [diff] [blame] | 2389 | #endif |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2390 | xmlURIPtr uri; |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2391 | xmlChar *ret; |
| 2392 | const xmlChar *absuri; |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2393 | |
| 2394 | if (path == NULL) |
| 2395 | return(NULL); |
Daniel Veillard | 69f8a13 | 2008-02-05 08:37:56 +0000 | [diff] [blame] | 2396 | |
Michael Stahl | 55b899a | 2012-09-07 12:14:00 +0800 | [diff] [blame] | 2397 | #if defined(_WIN32) |
| 2398 | /* |
| 2399 | * We must not change the backslashes to slashes if the the path |
| 2400 | * starts with \\?\ |
| 2401 | * Those paths can be up to 32k characters long. |
| 2402 | * Was added specifically for OpenOffice, those paths can't be converted |
| 2403 | * to URIs anyway. |
| 2404 | */ |
| 2405 | if ((path[0] == '\\') && (path[1] == '\\') && (path[2] == '?') && |
| 2406 | (path[3] == '\\') ) |
| 2407 | return xmlStrdup((const xmlChar *) path); |
| 2408 | #endif |
| 2409 | |
| 2410 | /* sanitize filename starting with // so it can be used as URI */ |
Daniel Veillard | 69f8a13 | 2008-02-05 08:37:56 +0000 | [diff] [blame] | 2411 | if ((path[0] == '/') && (path[1] == '/') && (path[2] != '/')) |
| 2412 | path++; |
| 2413 | |
Daniel Veillard | c64b8e9 | 2003-02-24 11:47:13 +0000 | [diff] [blame] | 2414 | if ((uri = xmlParseURI((const char *) path)) != NULL) { |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2415 | xmlFreeURI(uri); |
| 2416 | return xmlStrdup(path); |
| 2417 | } |
| 2418 | |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2419 | /* Check if this is an "absolute uri" */ |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2420 | absuri = xmlStrstr(path, BAD_CAST "://"); |
| 2421 | if (absuri != NULL) { |
| 2422 | int l, j; |
| 2423 | unsigned char c; |
| 2424 | xmlChar *escURI; |
| 2425 | |
| 2426 | /* |
| 2427 | * this looks like an URI where some parts have not been |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2428 | * escaped leading to a parsing problem. Check that the first |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2429 | * part matches a protocol. |
| 2430 | */ |
| 2431 | l = absuri - path; |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2432 | /* Bypass if first part (part before the '://') is > 20 chars */ |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2433 | if ((l <= 0) || (l > 20)) |
| 2434 | goto path_processing; |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2435 | /* Bypass if any non-alpha characters are present in first part */ |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2436 | for (j = 0;j < l;j++) { |
| 2437 | c = path[j]; |
| 2438 | if (!(((c >= 'a') && (c <= 'z')) || ((c >= 'A') && (c <= 'Z')))) |
| 2439 | goto path_processing; |
| 2440 | } |
| 2441 | |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2442 | /* Escape all except the characters specified in the supplied path */ |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2443 | escURI = xmlURIEscapeStr(path, BAD_CAST ":/?_.#&;="); |
| 2444 | if (escURI != NULL) { |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2445 | /* Try parsing the escaped path */ |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2446 | uri = xmlParseURI((const char *) escURI); |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2447 | /* If successful, return the escaped string */ |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2448 | if (uri != NULL) { |
| 2449 | xmlFreeURI(uri); |
| 2450 | return escURI; |
| 2451 | } |
Nick Wellnhofer | d6b3645 | 2017-05-27 14:44:36 +0200 | [diff] [blame] | 2452 | xmlFree(escURI); |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2453 | } |
| 2454 | } |
| 2455 | |
| 2456 | path_processing: |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2457 | /* For Windows implementations, replace backslashes with 'forward slashes' */ |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2458 | #if defined(_WIN32) && !defined(__CYGWIN__) |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2459 | /* |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2460 | * Create a URI structure |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2461 | */ |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2462 | uri = xmlCreateURI(); |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2463 | if (uri == NULL) { /* Guard against 'out of memory' */ |
Daniel Veillard | a76fe5c | 2003-04-24 16:06:47 +0000 | [diff] [blame] | 2464 | return(NULL); |
| 2465 | } |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2466 | |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2467 | len = xmlStrlen(path); |
| 2468 | if ((len > 2) && IS_WINDOWS_PATH(path)) { |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2469 | /* make the scheme 'file' */ |
Nick Wellnhofer | 41c0a13 | 2017-10-09 13:32:20 +0200 | [diff] [blame] | 2470 | uri->scheme = (char *) xmlStrdup(BAD_CAST "file"); |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2471 | /* allocate space for leading '/' + path + string terminator */ |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2472 | uri->path = xmlMallocAtomic(len + 2); |
| 2473 | if (uri->path == NULL) { |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 2474 | xmlFreeURI(uri); /* Guard against 'out of memory' */ |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2475 | return(NULL); |
| 2476 | } |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2477 | /* Put in leading '/' plus path */ |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2478 | uri->path[0] = '/'; |
Igor Zlatkovic | ce07616 | 2003-02-23 13:39:39 +0000 | [diff] [blame] | 2479 | p = uri->path + 1; |
Nick Wellnhofer | 41c0a13 | 2017-10-09 13:32:20 +0200 | [diff] [blame] | 2480 | strncpy(p, (char *) path, len + 1); |
Igor Zlatkovic | ce07616 | 2003-02-23 13:39:39 +0000 | [diff] [blame] | 2481 | } else { |
Nick Wellnhofer | 41c0a13 | 2017-10-09 13:32:20 +0200 | [diff] [blame] | 2482 | uri->path = (char *) xmlStrdup(path); |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2483 | if (uri->path == NULL) { |
| 2484 | xmlFreeURI(uri); |
| 2485 | return(NULL); |
| 2486 | } |
Igor Zlatkovic | ce07616 | 2003-02-23 13:39:39 +0000 | [diff] [blame] | 2487 | p = uri->path; |
| 2488 | } |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 2489 | /* Now change all occurrences of '\' to '/' */ |
Igor Zlatkovic | ce07616 | 2003-02-23 13:39:39 +0000 | [diff] [blame] | 2490 | while (*p != '\0') { |
| 2491 | if (*p == '\\') |
| 2492 | *p = '/'; |
| 2493 | p++; |
| 2494 | } |
Daniel Veillard | 8f3392e | 2006-02-03 09:45:10 +0000 | [diff] [blame] | 2495 | |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2496 | if (uri->scheme == NULL) { |
William M. Brack | 2224227 | 2007-01-27 07:59:37 +0000 | [diff] [blame] | 2497 | ret = xmlStrdup((const xmlChar *) uri->path); |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2498 | } else { |
| 2499 | ret = xmlSaveUri(uri); |
| 2500 | } |
Daniel Veillard | 8f3392e | 2006-02-03 09:45:10 +0000 | [diff] [blame] | 2501 | |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2502 | xmlFreeURI(uri); |
Daniel Veillard | 336a8e1 | 2005-08-07 10:46:19 +0000 | [diff] [blame] | 2503 | #else |
| 2504 | ret = xmlStrdup((const xmlChar *) path); |
| 2505 | #endif |
Igor Zlatkovic | f2238e6 | 2003-02-19 14:50:35 +0000 | [diff] [blame] | 2506 | return(ret); |
| 2507 | } |
Owen Taylor | 3473f88 | 2001-02-23 17:55:21 +0000 | [diff] [blame] | 2508 | |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2509 | /** |
| 2510 | * xmlPathToURI: |
| 2511 | * @path: the resource locator in a filesystem notation |
| 2512 | * |
| 2513 | * Constructs an URI expressing the existing path |
| 2514 | * |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2515 | * Returns a new URI, or a duplicate of the path parameter if the |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2516 | * construction fails. The caller is responsible for freeing the memory |
| 2517 | * occupied by the returned string. If there is insufficient memory available, |
| 2518 | * or the argument is NULL, the function returns NULL. |
| 2519 | */ |
| 2520 | xmlChar * |
| 2521 | xmlPathToURI(const xmlChar *path) |
| 2522 | { |
| 2523 | xmlURIPtr uri; |
| 2524 | xmlURI temp; |
| 2525 | xmlChar *ret, *cal; |
| 2526 | |
| 2527 | if (path == NULL) |
| 2528 | return(NULL); |
| 2529 | |
| 2530 | if ((uri = xmlParseURI((const char *) path)) != NULL) { |
| 2531 | xmlFreeURI(uri); |
| 2532 | return xmlStrdup(path); |
| 2533 | } |
| 2534 | cal = xmlCanonicPath(path); |
| 2535 | if (cal == NULL) |
| 2536 | return(NULL); |
Daniel Veillard | 481dcfc | 2006-11-06 08:54:18 +0000 | [diff] [blame] | 2537 | #if defined(_WIN32) && !defined(__CYGWIN__) |
Daniel Veillard | 5756038 | 2012-07-24 11:44:23 +0800 | [diff] [blame] | 2538 | /* xmlCanonicPath can return an URI on Windows (is that the intended behaviour?) |
Haibo Huang | cfd91dc | 2020-07-30 23:01:33 -0700 | [diff] [blame] | 2539 | If 'cal' is a valid URI already then we are done here, as continuing would make |
Daniel Veillard | 481dcfc | 2006-11-06 08:54:18 +0000 | [diff] [blame] | 2540 | it invalid. */ |
| 2541 | if ((uri = xmlParseURI((const char *) cal)) != NULL) { |
| 2542 | xmlFreeURI(uri); |
| 2543 | return cal; |
| 2544 | } |
| 2545 | /* 'cal' can contain a relative path with backslashes. If that is processed |
| 2546 | by xmlSaveURI, they will be escaped and the external entity loader machinery |
| 2547 | will fail. So convert them to slashes. Misuse 'ret' for walking. */ |
| 2548 | ret = cal; |
| 2549 | while (*ret != '\0') { |
| 2550 | if (*ret == '\\') |
| 2551 | *ret = '/'; |
| 2552 | ret++; |
| 2553 | } |
| 2554 | #endif |
Daniel Veillard | b8efdda | 2006-10-10 12:37:14 +0000 | [diff] [blame] | 2555 | memset(&temp, 0, sizeof(temp)); |
| 2556 | temp.path = (char *) cal; |
| 2557 | ret = xmlSaveUri(&temp); |
| 2558 | xmlFree(cal); |
| 2559 | return(ret); |
| 2560 | } |