Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 1 | /* |
| 2 | * nanohttp.c: minimalist HTTP GET implementation to fetch external subsets. |
| 3 | * focuses on size, streamability, reentrancy and portability |
| 4 | * |
| 5 | * This is clearly not a general purpose HTTP implementation |
| 6 | * If you look for one, check: |
| 7 | * http://www.w3.org/Library/ |
| 8 | * |
| 9 | * See Copyright for the status of this software. |
| 10 | * |
| 11 | * Daniel.Veillard@w3.org |
| 12 | */ |
| 13 | |
| 14 | /* TODO add compression support, Send the Accept- , and decompress on the |
| 15 | fly with ZLIB if found at compile-time */ |
| 16 | |
| 17 | #ifndef WIN32 |
| 18 | #include "config.h" |
| 19 | #endif |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <string.h> |
| 23 | |
| 24 | #ifdef HAVE_STDLIB_H |
| 25 | #include <stdlib.h> |
| 26 | #endif |
| 27 | #ifdef HAVE_UNISTD_H |
| 28 | #include <unistd.h> |
| 29 | #endif |
| 30 | #ifdef HAVE_SYS_SOCKET_H |
| 31 | #include <sys/socket.h> |
| 32 | #endif |
| 33 | #ifdef HAVE_NETINET_IN_H |
| 34 | #include <netinet/in.h> |
| 35 | #endif |
| 36 | #ifdef HAVE_ARPA_INET_H |
| 37 | #include <arpa/inet.h> |
| 38 | #endif |
| 39 | #ifdef HAVE_NETDB_H |
| 40 | #include <netdb.h> |
| 41 | #endif |
| 42 | #ifdef HAVE_FCNTL_H |
| 43 | #include <fcntl.h> |
| 44 | #endif |
| 45 | #ifdef HAVE_ERRNO_H |
| 46 | #include <errno.h> |
| 47 | #endif |
| 48 | #ifdef HAVE_SYS_TIME_H |
| 49 | #include <sys/time.h> |
| 50 | #endif |
| 51 | #ifdef HAVE_SYS_SELECT_H |
| 52 | #include <sys/select.h> |
| 53 | #endif |
| 54 | |
| 55 | #include "xmlmemory.h" |
| 56 | |
| 57 | #ifdef STANDALONE |
| 58 | #define DEBUG_HTTP |
| 59 | #endif |
| 60 | |
| 61 | #define XML_NANO_HTTP_MAX_REDIR 10 |
| 62 | |
| 63 | #define XML_NANO_HTTP_CHUNK 4096 |
| 64 | |
| 65 | #define XML_NANO_HTTP_CLOSED 0 |
| 66 | #define XML_NANO_HTTP_WRITE 1 |
| 67 | #define XML_NANO_HTTP_READ 2 |
| 68 | #define XML_NANO_HTTP_NONE 4 |
| 69 | |
| 70 | typedef struct xmlNanoHTTPCtxt { |
| 71 | char *protocol; /* the protocol name */ |
| 72 | char *hostname; /* the host name */ |
| 73 | int port; /* the port */ |
| 74 | char *path; /* the path within the URL */ |
| 75 | int fd; /* the file descriptor for the socket */ |
| 76 | int state; /* WRITE / READ / CLOSED */ |
| 77 | char *out; /* buffer sent (zero terminated) */ |
| 78 | char *outptr; /* index within the buffer sent */ |
| 79 | char *in; /* the receiving buffer */ |
| 80 | char *content; /* the start of the content */ |
| 81 | char *inptr; /* the next byte to read from network */ |
| 82 | char *inrptr; /* the next byte to give back to the client */ |
| 83 | int inlen; /* len of the input buffer */ |
| 84 | int last; /* return code for last operation */ |
| 85 | int returnValue; /* the protocol return value */ |
| 86 | char *contentType; /* the MIME type for the input */ |
| 87 | char *location; /* the new URL in case of redirect */ |
| 88 | } xmlNanoHTTPCtxt, *xmlNanoHTTPCtxtPtr; |
| 89 | |
| 90 | /** |
| 91 | * xmlNanoHTTPScanURL: |
| 92 | * @ctxt: an HTTP context |
| 93 | * @URL: The URL used to initialize the context |
| 94 | * |
| 95 | * (Re)Initialize an HTTP context by parsing the URL and finding |
| 96 | * the protocol host port and path it indicates. |
| 97 | */ |
| 98 | |
| 99 | static void |
| 100 | xmlNanoHTTPScanURL(xmlNanoHTTPCtxtPtr ctxt, const char *URL) { |
| 101 | const char *cur = URL; |
| 102 | char buf[4096]; |
| 103 | int index = 0; |
| 104 | int port = 0; |
| 105 | |
| 106 | if (ctxt->protocol != NULL) { |
| 107 | xmlFree(ctxt->protocol); |
| 108 | ctxt->protocol = NULL; |
| 109 | } |
| 110 | if (ctxt->hostname != NULL) { |
| 111 | xmlFree(ctxt->hostname); |
| 112 | ctxt->hostname = NULL; |
| 113 | } |
| 114 | if (ctxt->path != NULL) { |
| 115 | xmlFree(ctxt->path); |
| 116 | ctxt->path = NULL; |
| 117 | } |
| 118 | buf[index] = 0; |
| 119 | while (*cur != 0) { |
| 120 | if ((cur[0] == ':') && (cur[1] == '/') && (cur[2] == '/')) { |
| 121 | buf[index] = 0; |
| 122 | ctxt->protocol = xmlMemStrdup(buf); |
| 123 | index = 0; |
| 124 | cur += 3; |
| 125 | break; |
| 126 | } |
| 127 | buf[index++] = *cur++; |
| 128 | } |
| 129 | if (*cur == 0) return; |
| 130 | |
| 131 | buf[index] = 0; |
| 132 | while (1) { |
| 133 | if (cur[0] == ':') { |
| 134 | buf[index] = 0; |
| 135 | ctxt->hostname = xmlMemStrdup(buf); |
| 136 | index = 0; |
| 137 | cur += 1; |
| 138 | while ((*cur >= '0') && (*cur <= '9')) { |
| 139 | port *= 10; |
| 140 | port += *cur - '0'; |
| 141 | cur++; |
| 142 | } |
| 143 | if (port != 0) ctxt->port = port; |
| 144 | while ((cur[0] != '/') && (*cur != 0)) |
| 145 | cur++; |
| 146 | break; |
| 147 | } |
| 148 | if ((*cur == '/') || (*cur == 0)) { |
| 149 | buf[index] = 0; |
| 150 | ctxt->hostname = xmlMemStrdup(buf); |
| 151 | index = 0; |
| 152 | break; |
| 153 | } |
| 154 | buf[index++] = *cur++; |
| 155 | } |
| 156 | if (*cur == 0) |
| 157 | ctxt->path = xmlMemStrdup("/"); |
| 158 | else { |
| 159 | buf[index] = 0; |
| 160 | while (*cur != 0) { |
| 161 | if ((cur[0] == '#') || (cur[0] == '?')) |
| 162 | break; |
| 163 | buf[index++] = *cur++; |
| 164 | } |
| 165 | buf[index] = 0; |
| 166 | ctxt->path = xmlMemStrdup(buf); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * xmlNanoHTTPNewCtxt: |
| 172 | * @URL: The URL used to initialize the context |
| 173 | * |
| 174 | * Allocate and initialize a new HTTP context. |
| 175 | * |
| 176 | * Returns an HTTP context or NULL in case of error. |
| 177 | */ |
| 178 | |
| 179 | static xmlNanoHTTPCtxtPtr |
| 180 | xmlNanoHTTPNewCtxt(const char *URL) { |
| 181 | xmlNanoHTTPCtxtPtr ret; |
| 182 | |
| 183 | ret = (xmlNanoHTTPCtxtPtr) xmlMalloc(sizeof(xmlNanoHTTPCtxt)); |
| 184 | if (ret == NULL) return(NULL); |
| 185 | |
| 186 | memset(ret, 0, sizeof(xmlNanoHTTPCtxt)); |
| 187 | ret->port = 80; |
| 188 | ret->returnValue = 0; |
| 189 | |
| 190 | xmlNanoHTTPScanURL(ret, URL); |
| 191 | |
| 192 | return(ret); |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * xmlNanoHTTPFreeCtxt: |
| 197 | * @ctxt: an HTTP context |
| 198 | * |
| 199 | * Frees the context after closing the connection. |
| 200 | */ |
| 201 | |
| 202 | static void |
| 203 | xmlNanoHTTPFreeCtxt(xmlNanoHTTPCtxtPtr ctxt) { |
| 204 | if (ctxt == NULL) return; |
| 205 | if (ctxt->hostname != NULL) xmlFree(ctxt->hostname); |
| 206 | if (ctxt->protocol != NULL) xmlFree(ctxt->protocol); |
| 207 | if (ctxt->path != NULL) xmlFree(ctxt->path); |
| 208 | if (ctxt->out != NULL) xmlFree(ctxt->out); |
| 209 | if (ctxt->in != NULL) xmlFree(ctxt->in); |
| 210 | if (ctxt->contentType != NULL) xmlFree(ctxt->contentType); |
| 211 | if (ctxt->location != NULL) xmlFree(ctxt->location); |
| 212 | ctxt->state = XML_NANO_HTTP_NONE; |
| 213 | if (ctxt->fd >= 0) close(ctxt->fd); |
| 214 | ctxt->fd = -1; |
| 215 | xmlFree(ctxt); |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * xmlNanoHTTPSend: |
| 220 | * @ctxt: an HTTP context |
| 221 | * |
| 222 | * Send the input needed to initiate the processing on the server side |
| 223 | */ |
| 224 | |
| 225 | static void |
| 226 | xmlNanoHTTPSend(xmlNanoHTTPCtxtPtr ctxt) { |
| 227 | if (ctxt->state & XML_NANO_HTTP_WRITE) |
| 228 | ctxt->last = write(ctxt->fd, ctxt->outptr, strlen(ctxt->outptr)); |
| 229 | } |
| 230 | |
| 231 | /** |
| 232 | * xmlNanoHTTPRecv: |
| 233 | * @ctxt: an HTTP context |
| 234 | * |
| 235 | * Read information coming from the HTTP connection. |
| 236 | * This is a blocking call (but it blocks in select(), not read()). |
| 237 | * |
| 238 | * Returns the number of byte read or -1 in case of error. |
| 239 | */ |
| 240 | |
| 241 | static int |
| 242 | xmlNanoHTTPRecv(xmlNanoHTTPCtxtPtr ctxt) { |
| 243 | fd_set rfd; |
| 244 | struct timeval tv; |
| 245 | |
| 246 | |
| 247 | while (ctxt->state & XML_NANO_HTTP_READ) { |
| 248 | if (ctxt->in == NULL) { |
| 249 | ctxt->in = (char *) xmlMalloc(65000 * sizeof(char)); |
| 250 | if (ctxt->in == NULL) { |
| 251 | ctxt->last = -1; |
| 252 | return(-1); |
| 253 | } |
| 254 | ctxt->inlen = 65000; |
| 255 | ctxt->inptr = ctxt->content = ctxt->inrptr = ctxt->in; |
| 256 | } |
| 257 | if (ctxt->inrptr > ctxt->in + XML_NANO_HTTP_CHUNK) { |
| 258 | int delta = ctxt->inrptr - ctxt->in; |
| 259 | int len = ctxt->inptr - ctxt->inrptr; |
| 260 | |
| 261 | memmove(ctxt->in, ctxt->inrptr, len); |
| 262 | ctxt->inrptr -= delta; |
| 263 | ctxt->content -= delta; |
| 264 | ctxt->inptr -= delta; |
| 265 | } |
| 266 | if ((ctxt->in + ctxt->inlen) < (ctxt->inptr + XML_NANO_HTTP_CHUNK)) { |
| 267 | int d_inptr = ctxt->inptr - ctxt->in; |
| 268 | int d_content = ctxt->content - ctxt->in; |
| 269 | int d_inrptr = ctxt->inrptr - ctxt->in; |
| 270 | |
| 271 | ctxt->inlen *= 2; |
| 272 | ctxt->in = (char *) xmlRealloc(ctxt->in, ctxt->inlen); |
| 273 | if (ctxt->in == NULL) { |
| 274 | ctxt->last = -1; |
| 275 | return(-1); |
| 276 | } |
| 277 | ctxt->inptr = ctxt->in + d_inptr; |
| 278 | ctxt->content = ctxt->in + d_content; |
| 279 | ctxt->inrptr = ctxt->in + d_inrptr; |
| 280 | } |
| 281 | ctxt->last = read(ctxt->fd, ctxt->inptr, XML_NANO_HTTP_CHUNK); |
| 282 | if (ctxt->last > 0) { |
| 283 | ctxt->inptr += ctxt->last; |
| 284 | return(ctxt->last); |
| 285 | } |
| 286 | if (ctxt->last == 0) { |
| 287 | return(0); |
| 288 | } |
| 289 | #ifdef EWOULDBLOCK |
| 290 | if ((ctxt->last == -1) && (errno != EWOULDBLOCK)) { |
| 291 | return(0); |
| 292 | } |
| 293 | #endif |
| 294 | tv.tv_sec=10; |
| 295 | tv.tv_usec=0; |
| 296 | FD_ZERO(&rfd); |
| 297 | FD_SET(ctxt->fd, &rfd); |
| 298 | |
| 299 | if(select(ctxt->fd+1, &rfd, NULL, NULL, &tv)<1) |
| 300 | return(0); |
| 301 | } |
| 302 | return(0); |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * xmlNanoHTTPReadLine: |
| 307 | * @ctxt: an HTTP context |
| 308 | * |
| 309 | * Read one line in the HTTP server output, usually for extracting |
| 310 | * the HTTP protocol informations from the answer header. |
| 311 | * |
| 312 | * Returns a newly allocated string with a copy of the line, or NULL |
| 313 | * which indicate the end of the input. |
| 314 | */ |
| 315 | |
| 316 | static char * |
| 317 | xmlNanoHTTPReadLine(xmlNanoHTTPCtxtPtr ctxt) { |
| 318 | char buf[4096]; |
| 319 | char *bp=buf; |
| 320 | |
| 321 | while(bp - buf < 4095) { |
| 322 | if(ctxt->inrptr == ctxt->inptr) { |
| 323 | if (xmlNanoHTTPRecv(ctxt) == 0) { |
| 324 | if (bp == buf) |
| 325 | return(NULL); |
| 326 | else |
| 327 | *bp = 0; |
| 328 | return(xmlMemStrdup(buf)); |
| 329 | } |
| 330 | } |
| 331 | *bp = *ctxt->inrptr++; |
| 332 | if(*bp == '\n') { |
| 333 | *bp = 0; |
| 334 | return(xmlMemStrdup(buf)); |
| 335 | } |
| 336 | if(*bp != '\r') |
| 337 | bp++; |
| 338 | } |
| 339 | buf[4095] = 0; |
| 340 | return(xmlMemStrdup(buf)); |
| 341 | } |
| 342 | |
| 343 | |
| 344 | /** |
| 345 | * xmlNanoHTTPScanAnswer: |
| 346 | * @ctxt: an HTTP context |
| 347 | * @line: an HTTP header line |
| 348 | * |
| 349 | * Try to extract useful informations from the server answer. |
| 350 | * We currently parse and process: |
| 351 | * - The HTTP revision/ return code |
| 352 | * - The Content-Type |
| 353 | * - The Location for redirrect processing. |
| 354 | * |
| 355 | * Returns -1 in case of failure, the file descriptor number otherwise |
| 356 | */ |
| 357 | |
| 358 | static void |
| 359 | xmlNanoHTTPScanAnswer(xmlNanoHTTPCtxtPtr ctxt, const char *line) { |
| 360 | const char *cur = line; |
| 361 | |
| 362 | if (line == NULL) return; |
| 363 | |
| 364 | if (!strncmp(line, "HTTP/", 5)) { |
| 365 | int version = 0; |
| 366 | int ret = 0; |
| 367 | |
| 368 | cur += 5; |
| 369 | while ((*cur >= '0') && (*cur <= '9')) { |
| 370 | version *= 10; |
| 371 | version += *cur - '0'; |
| 372 | cur++; |
| 373 | } |
| 374 | if (*cur == '.') { |
| 375 | cur++; |
| 376 | if ((*cur >= '0') && (*cur <= '9')) { |
| 377 | version *= 10; |
| 378 | version += *cur - '0'; |
| 379 | cur++; |
| 380 | } |
| 381 | while ((*cur >= '0') && (*cur <= '9')) |
| 382 | cur++; |
| 383 | } else |
| 384 | version *= 10; |
| 385 | if ((*cur != ' ') && (*cur != '\t')) return; |
| 386 | while ((*cur == ' ') || (*cur == '\t')) cur++; |
| 387 | if ((*cur < '0') || (*cur > '9')) return; |
| 388 | while ((*cur >= '0') && (*cur <= '9')) { |
| 389 | ret *= 10; |
| 390 | ret += *cur - '0'; |
| 391 | cur++; |
| 392 | } |
| 393 | if ((*cur != 0) && (*cur != ' ') && (*cur != '\t')) return; |
| 394 | ctxt->returnValue = ret; |
| 395 | } else if (!strncmp(line, "Content-Type:", 13)) { |
| 396 | cur += 13; |
| 397 | while ((*cur == ' ') || (*cur == '\t')) cur++; |
| 398 | if (ctxt->contentType != NULL) |
| 399 | xmlFree(ctxt->contentType); |
| 400 | ctxt->contentType = xmlMemStrdup(cur); |
| 401 | } else if (!strncmp(line, "ContentType:", 12)) { |
| 402 | cur += 12; |
| 403 | if (ctxt->contentType != NULL) return; |
| 404 | while ((*cur == ' ') || (*cur == '\t')) cur++; |
| 405 | ctxt->contentType = xmlMemStrdup(cur); |
| 406 | } else if (!strncmp(line, "content-type:", 13)) { |
| 407 | cur += 13; |
| 408 | if (ctxt->contentType != NULL) return; |
| 409 | while ((*cur == ' ') || (*cur == '\t')) cur++; |
| 410 | ctxt->contentType = xmlMemStrdup(cur); |
| 411 | } else if (!strncmp(line, "contenttype:", 12)) { |
| 412 | cur += 12; |
| 413 | if (ctxt->contentType != NULL) return; |
| 414 | while ((*cur == ' ') || (*cur == '\t')) cur++; |
| 415 | ctxt->contentType = xmlMemStrdup(cur); |
| 416 | } else if (!strncmp(line, "Location:", 9)) { |
| 417 | cur += 9; |
| 418 | while ((*cur == ' ') || (*cur == '\t')) cur++; |
| 419 | if (ctxt->location != NULL) |
| 420 | xmlFree(ctxt->location); |
| 421 | ctxt->location = xmlMemStrdup(cur); |
| 422 | } else if (!strncmp(line, "location:", 9)) { |
| 423 | cur += 9; |
| 424 | if (ctxt->location != NULL) return; |
| 425 | while ((*cur == ' ') || (*cur == '\t')) cur++; |
| 426 | ctxt->location = xmlMemStrdup(cur); |
| 427 | } |
| 428 | } |
| 429 | |
| 430 | /** |
| 431 | * xmlNanoHTTPConnectAttempt: |
| 432 | * @ia: an internet adress structure |
| 433 | * @port: the port number |
| 434 | * |
| 435 | * Attempt a connection to the given IP:port endpoint. It forces |
| 436 | * non-blocking semantic on the socket, and allow 60 seconds for |
| 437 | * the host to answer. |
| 438 | * |
| 439 | * Returns -1 in case of failure, the file descriptor number otherwise |
| 440 | */ |
| 441 | |
| 442 | static int |
| 443 | xmlNanoHTTPConnectAttempt(struct in_addr ia, int port) |
| 444 | { |
| 445 | int s=socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); |
| 446 | struct sockaddr_in sin; |
| 447 | fd_set wfd; |
| 448 | struct timeval tv; |
| 449 | int status; |
| 450 | |
| 451 | if(s==-1) { |
| 452 | #ifdef DEBUG_HTTP |
| 453 | perror("socket"); |
| 454 | #endif |
| 455 | return(-1); |
| 456 | } |
| 457 | |
| 458 | #ifdef _WINSOCKAPI_ |
| 459 | { |
| 460 | long levents = FD_READ | FD_WRITE | FD_ACCEPT | |
| 461 | FD_CONNECT | FD_CLOSE ; |
| 462 | int rv = 0 ; |
| 463 | u_long one = 1; |
| 464 | |
| 465 | status = ioctlsocket(s, FIONBIO, &one) == SOCKET_ERROR ? -1 : 0; |
| 466 | } |
| 467 | #else /* _WINSOCKAPI_ */ |
| 468 | #if defined(VMS) |
| 469 | { |
| 470 | int enable = 1; |
| 471 | status = IOCTL(s, FIONBIO, &enable); |
| 472 | } |
| 473 | #else /* VMS */ |
| 474 | if((status = fcntl(s, F_GETFL, 0)) != -1) { |
| 475 | #ifdef O_NONBLOCK |
| 476 | status |= O_NONBLOCK; |
| 477 | #else /* O_NONBLOCK */ |
| 478 | #ifdef F_NDELAY |
| 479 | status |= F_NDELAY; |
| 480 | #endif /* F_NDELAY */ |
| 481 | #endif /* !O_NONBLOCK */ |
| 482 | status = fcntl(s, F_SETFL, status); |
| 483 | } |
| 484 | if(status < 0) { |
| 485 | #ifdef DEBUG_HTTP |
| 486 | perror("nonblocking"); |
| 487 | #endif |
| 488 | close(s); |
| 489 | return(-1); |
| 490 | } |
| 491 | #endif /* !VMS */ |
| 492 | #endif /* !_WINSOCKAPI_ */ |
| 493 | |
| 494 | |
| 495 | sin.sin_family = AF_INET; |
| 496 | sin.sin_addr = ia; |
| 497 | sin.sin_port = htons(port); |
| 498 | |
| 499 | if((connect(s, (struct sockaddr *)&sin, sizeof(sin))==-1) && |
| 500 | (errno != EINPROGRESS)) { |
| 501 | perror("connect"); |
| 502 | close(s); |
| 503 | return(-1); |
| 504 | } |
| 505 | |
| 506 | tv.tv_sec = 60; /* We use 60 second timeouts for now */ |
| 507 | tv.tv_usec = 0; |
| 508 | |
| 509 | FD_ZERO(&wfd); |
| 510 | FD_SET(s, &wfd); |
| 511 | |
| 512 | switch(select(s+1, NULL, &wfd, NULL, &tv)) |
| 513 | { |
| 514 | case 0: |
| 515 | /* Time out */ |
| 516 | close(s); |
| 517 | return(-1); |
| 518 | case -1: |
| 519 | /* Ermm.. ?? */ |
| 520 | #ifdef DEBUG_HTTP |
| 521 | perror("select"); |
| 522 | #endif |
| 523 | close(s); |
| 524 | return(-1); |
| 525 | } |
| 526 | |
| 527 | return(s); |
| 528 | } |
| 529 | |
| 530 | /** |
| 531 | * xmlNanoHTTPConnectHost: |
| 532 | * @host: the host name |
| 533 | * @port: the port number |
| 534 | * |
| 535 | * Attempt a connection to the given host:port endpoint. It tries |
| 536 | * the multiple IP provided by the DNS if available. |
| 537 | * |
| 538 | * Returns -1 in case of failure, the file descriptor number otherwise |
| 539 | */ |
| 540 | |
| 541 | static int |
| 542 | xmlNanoHTTPConnectHost(const char *host, int port) |
| 543 | { |
| 544 | struct hostent *h; |
| 545 | int i; |
| 546 | int s; |
| 547 | |
| 548 | h=gethostbyname(host); |
| 549 | if(h==NULL) |
| 550 | { |
| 551 | #ifdef DEBUG_HTTP |
| 552 | fprintf(stderr,"unable to resolve '%s'.\n", host); |
| 553 | #endif |
| 554 | return(-1); |
| 555 | } |
| 556 | |
| 557 | for(i=0; h->h_addr_list[i]; i++) |
| 558 | { |
| 559 | struct in_addr ia; |
| 560 | memcpy(&ia, h->h_addr_list[i],4); |
| 561 | s = xmlNanoHTTPConnectAttempt(ia, port); |
| 562 | if(s != -1) |
| 563 | return(s); |
| 564 | } |
| 565 | |
| 566 | #ifdef DEBUG_HTTP |
| 567 | fprintf(stderr, "unable to connect to '%s'.\n", host); |
| 568 | #endif |
| 569 | return(-1); |
| 570 | } |
| 571 | |
| 572 | |
| 573 | /** |
| 574 | * xmlNanoHTTPOpen: |
| 575 | * @URL: The URL to load |
| 576 | * @contentType: if available the Content-Type information will be |
| 577 | * returned at that location |
| 578 | * |
| 579 | * This function try to open a connection to the indicated resource |
| 580 | * via HTTP GET. |
| 581 | * |
| 582 | * Returns NULL in case of failure, otherwise a request handler. |
| 583 | * The contentType, if provided must be freed by the caller |
| 584 | */ |
| 585 | |
| 586 | void * |
| 587 | xmlNanoHTTPOpen(const char *URL, char **contentType) { |
| 588 | xmlNanoHTTPCtxtPtr ctxt; |
| 589 | char buf[4096]; |
| 590 | int ret; |
| 591 | char *p; |
| 592 | int head; |
| 593 | int nbRedirects = 0; |
| 594 | char *redirURL = NULL; |
| 595 | |
| 596 | if (contentType != NULL) *contentType = NULL; |
| 597 | |
| 598 | retry: |
| 599 | if (redirURL == NULL) |
| 600 | ctxt = xmlNanoHTTPNewCtxt(URL); |
| 601 | else { |
| 602 | ctxt = xmlNanoHTTPNewCtxt(redirURL); |
| 603 | xmlFree(redirURL); |
| 604 | redirURL = NULL; |
| 605 | } |
| 606 | |
| 607 | if ((ctxt->protocol == NULL) || (strcmp(ctxt->protocol, "http"))) { |
| 608 | xmlNanoHTTPFreeCtxt(ctxt); |
| 609 | if (redirURL != NULL) xmlFree(redirURL); |
| 610 | return(NULL); |
| 611 | } |
| 612 | if (ctxt->hostname == NULL) { |
| 613 | xmlNanoHTTPFreeCtxt(ctxt); |
| 614 | return(NULL); |
| 615 | } |
| 616 | ret = xmlNanoHTTPConnectHost(ctxt->hostname, ctxt->port); |
| 617 | if (ret < 0) { |
| 618 | xmlNanoHTTPFreeCtxt(ctxt); |
| 619 | return(NULL); |
| 620 | } |
| 621 | ctxt->fd = ret; |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 622 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 623 | snprintf(buf, sizeof(buf),"GET %s HTTP/1.0\r\nHost: %s\r\n\r\n", |
| 624 | ctxt->path, ctxt->hostname); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 625 | #else |
| 626 | sprintf(buf, "GET %s HTTP/1.0\r\nHost: %s\r\n\r\n", |
| 627 | ctxt->path, ctxt->hostname); |
| 628 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 629 | #ifdef DEBUG_HTTP |
| 630 | printf("-> GET %s HTTP/1.0\n-> Host: %s\n\n", |
| 631 | ctxt->path, ctxt->hostname); |
| 632 | #endif |
| 633 | ctxt->outptr = ctxt->out = xmlMemStrdup(buf); |
| 634 | ctxt->state = XML_NANO_HTTP_WRITE; |
| 635 | xmlNanoHTTPSend(ctxt); |
| 636 | ctxt->state = XML_NANO_HTTP_READ; |
| 637 | head = 1; |
| 638 | |
| 639 | while ((p = xmlNanoHTTPReadLine(ctxt)) != NULL) { |
| 640 | if (head && (*p == 0)) { |
| 641 | head = 0; |
| 642 | ctxt->content = ctxt->inrptr; |
| 643 | break; |
| 644 | } |
| 645 | xmlNanoHTTPScanAnswer(ctxt, p); |
| 646 | |
| 647 | #ifdef DEBUG_HTTP |
| 648 | if (p != NULL) printf("<- %s\n", p); |
| 649 | #endif |
| 650 | if (p != NULL) xmlFree(p); |
| 651 | } |
| 652 | |
| 653 | if ((ctxt->location != NULL) && (ctxt->returnValue >= 300) && |
| 654 | (ctxt->returnValue < 400)) { |
| 655 | #ifdef DEBUG_HTTP |
| 656 | printf("\nRedirect to: %s\n", ctxt->location); |
| 657 | #endif |
| 658 | while (xmlNanoHTTPRecv(ctxt)) ; |
| 659 | if (nbRedirects < XML_NANO_HTTP_MAX_REDIR) { |
| 660 | nbRedirects++; |
| 661 | redirURL = xmlMemStrdup(ctxt->location); |
| 662 | xmlNanoHTTPFreeCtxt(ctxt); |
| 663 | goto retry; |
| 664 | } |
| 665 | xmlNanoHTTPFreeCtxt(ctxt); |
| 666 | #ifdef DEBUG_HTTP |
| 667 | printf("Too many redirrects, aborting ...\n"); |
| 668 | #endif |
| 669 | return(NULL); |
| 670 | |
| 671 | } |
| 672 | |
| 673 | if ((contentType != NULL) && (ctxt->contentType != NULL)) |
| 674 | *contentType = xmlMemStrdup(ctxt->contentType); |
| 675 | |
| 676 | #ifdef DEBUG_HTTP |
| 677 | if (ctxt->contentType != NULL) |
| 678 | printf("\nCode %d, content-type '%s'\n\n", |
| 679 | ctxt->returnValue, ctxt->contentType); |
| 680 | else |
| 681 | printf("\nCode %d, no content-type\n\n", |
| 682 | ctxt->returnValue); |
| 683 | #endif |
| 684 | |
| 685 | return((void *) ctxt); |
| 686 | } |
| 687 | |
| 688 | /** |
| 689 | * xmlNanoHTTPRead: |
| 690 | * @ctx: the HTTP context |
| 691 | * @dest: a buffer |
| 692 | * @len: the buffer length |
| 693 | * |
| 694 | * This function tries to read @len bytes from the existing HTTP connection |
| 695 | * and saves them in @dest. This is a blocking call. |
| 696 | * |
| 697 | * Returns the number of byte read. 0 is an indication of an end of connection. |
| 698 | * -1 indicates a parameter error. |
| 699 | */ |
| 700 | int |
| 701 | xmlNanoHTTPRead(void *ctx, void *dest, int len) { |
| 702 | xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx; |
| 703 | |
| 704 | if (ctx == NULL) return(-1); |
| 705 | if (dest == NULL) return(-1); |
| 706 | if (len <= 0) return(0); |
| 707 | |
| 708 | while (ctxt->inptr - ctxt->inrptr < len) { |
| 709 | if (xmlNanoHTTPRecv(ctxt) == 0) break; |
| 710 | } |
| 711 | if (ctxt->inptr - ctxt->inrptr < len) |
| 712 | len = ctxt->inptr - ctxt->inrptr; |
| 713 | memcpy(dest, ctxt->inrptr, len); |
| 714 | ctxt->inrptr += len; |
| 715 | return(len); |
| 716 | } |
| 717 | |
| 718 | /** |
| 719 | * xmlNanoHTTPClose: |
| 720 | * @ctx: the HTTP context |
| 721 | * |
| 722 | * This function closes an HTTP context, it ends up the connection and |
| 723 | * free all data related to it. |
| 724 | */ |
| 725 | void |
| 726 | xmlNanoHTTPClose(void *ctx) { |
| 727 | xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx; |
| 728 | |
| 729 | if (ctx == NULL) return; |
| 730 | |
| 731 | xmlNanoHTTPFreeCtxt(ctxt); |
| 732 | } |
| 733 | |
| 734 | /** |
| 735 | * xmlNanoHTTPMethod: |
| 736 | * @URL: The URL to load |
| 737 | * @method: the HTTP method to use |
| 738 | * @input: the input string if any |
| 739 | * @contentType: the Content-Type information IN and OUT |
| 740 | * @headers: the extra headers |
| 741 | * |
| 742 | * This function try to open a connection to the indicated resource |
| 743 | * via HTTP using the given @method, adding the given extra headers |
| 744 | * and the input buffer for the request content. |
| 745 | * |
| 746 | * Returns NULL in case of failure, otherwise a request handler. |
| 747 | * The contentType, if provided must be freed by the caller |
| 748 | */ |
| 749 | |
| 750 | #ifndef DEBUG_HTTP |
| 751 | #define DEBUG_HTTP |
| 752 | #endif |
| 753 | void * |
| 754 | xmlNanoHTTPMethod(const char *URL, const char *method, const char *input, |
| 755 | char **contentType, const char *headers) { |
| 756 | xmlNanoHTTPCtxtPtr ctxt; |
| 757 | char buf[20000]; |
| 758 | int ret; |
| 759 | char *p; |
| 760 | int head; |
| 761 | int nbRedirects = 0; |
| 762 | char *redirURL = NULL; |
| 763 | |
| 764 | if (URL == NULL) return(NULL); |
| 765 | if (method == NULL) method = "GET"; |
| 766 | if (contentType != NULL) *contentType = NULL; |
| 767 | |
| 768 | retry: |
| 769 | if (redirURL == NULL) |
| 770 | ctxt = xmlNanoHTTPNewCtxt(URL); |
| 771 | else { |
| 772 | ctxt = xmlNanoHTTPNewCtxt(redirURL); |
| 773 | xmlFree(redirURL); |
| 774 | redirURL = NULL; |
| 775 | } |
| 776 | |
| 777 | if ((ctxt->protocol == NULL) || (strcmp(ctxt->protocol, "http"))) { |
| 778 | xmlNanoHTTPFreeCtxt(ctxt); |
| 779 | if (redirURL != NULL) xmlFree(redirURL); |
| 780 | return(NULL); |
| 781 | } |
| 782 | if (ctxt->hostname == NULL) { |
| 783 | xmlNanoHTTPFreeCtxt(ctxt); |
| 784 | return(NULL); |
| 785 | } |
| 786 | ret = xmlNanoHTTPConnectHost(ctxt->hostname, ctxt->port); |
| 787 | if (ret < 0) { |
| 788 | xmlNanoHTTPFreeCtxt(ctxt); |
| 789 | return(NULL); |
| 790 | } |
| 791 | ctxt->fd = ret; |
| 792 | |
| 793 | if (input == NULL) { |
| 794 | if (headers == NULL) { |
| 795 | if ((contentType == NULL) || (*contentType == NULL)) { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 796 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 797 | snprintf(buf, sizeof(buf), |
| 798 | "%s %s HTTP/1.0\r\nHost: %s\r\n\r\n", |
| 799 | method, ctxt->path, ctxt->hostname); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 800 | #else |
| 801 | sprintf(buf, |
| 802 | "%s %s HTTP/1.0\r\nHost: %s\r\n\r\n", |
| 803 | method, ctxt->path, ctxt->hostname); |
| 804 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 805 | } else { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 806 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 807 | snprintf(buf, sizeof(buf), |
| 808 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\n\r\n", |
| 809 | method, ctxt->path, ctxt->hostname, *contentType); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 810 | #else |
| 811 | sprintf(buf, |
| 812 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\n\r\n", |
| 813 | method, ctxt->path, ctxt->hostname, *contentType); |
| 814 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 815 | } |
| 816 | } else { |
| 817 | if ((contentType == NULL) || (*contentType == NULL)) { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 818 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 819 | snprintf(buf, sizeof(buf), |
| 820 | "%s %s HTTP/1.0\r\nHost: %s\r\n%s\r\n", |
| 821 | method, ctxt->path, ctxt->hostname, headers); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 822 | #else |
| 823 | sprintf(buf, |
| 824 | "%s %s HTTP/1.0\r\nHost: %s\r\n%s\r\n", |
| 825 | method, ctxt->path, ctxt->hostname, headers); |
| 826 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 827 | } else { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 828 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 829 | snprintf(buf, sizeof(buf), |
| 830 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\n%s\r\n", |
| 831 | method, ctxt->path, ctxt->hostname, *contentType, |
| 832 | headers); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 833 | #else |
| 834 | sprintf(buf, |
| 835 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\n%s\r\n", |
| 836 | method, ctxt->path, ctxt->hostname, *contentType, |
| 837 | headers); |
| 838 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 839 | } |
| 840 | } |
| 841 | } else { |
| 842 | int len = strlen(input); |
| 843 | if (headers == NULL) { |
| 844 | if ((contentType == NULL) || (*contentType == NULL)) { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 845 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 846 | snprintf(buf, sizeof(buf), |
| 847 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Length: %d\r\n\r\n%s", |
| 848 | method, ctxt->path, ctxt->hostname, len, input); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 849 | #else |
| 850 | sprintf(buf, |
| 851 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Length: %d\r\n\r\n%s", |
| 852 | method, ctxt->path, ctxt->hostname, len, input); |
| 853 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 854 | } else { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 855 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 856 | snprintf(buf, sizeof(buf), |
| 857 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\nContent-Length: %d\r\n\r\n%s", |
| 858 | method, ctxt->path, ctxt->hostname, *contentType, len, |
| 859 | input); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 860 | #else |
| 861 | sprintf(buf, |
| 862 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\nContent-Length: %d\r\n\r\n%s", |
| 863 | method, ctxt->path, ctxt->hostname, *contentType, len, |
| 864 | input); |
| 865 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 866 | } |
| 867 | } else { |
| 868 | if ((contentType == NULL) || (*contentType == NULL)) { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 869 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 870 | snprintf(buf, sizeof(buf), |
| 871 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Length: %d\r\n%s\r\n%s", |
| 872 | method, ctxt->path, ctxt->hostname, len, |
| 873 | headers, input); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 874 | #else |
| 875 | sprintf(buf, |
| 876 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Length: %d\r\n%s\r\n%s", |
| 877 | method, ctxt->path, ctxt->hostname, len, |
| 878 | headers, input); |
| 879 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 880 | } else { |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 881 | #ifdef HAVE_SNPRINTF |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 882 | snprintf(buf, sizeof(buf), |
| 883 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\nContent-Length: %d\r\n%s\r\n%s", |
| 884 | method, ctxt->path, ctxt->hostname, *contentType, |
| 885 | len, headers, input); |
Daniel Veillard | 335849b | 1999-09-23 23:08:42 +0000 | [diff] [blame] | 886 | #else |
| 887 | sprintf(buf, |
| 888 | "%s %s HTTP/1.0\r\nHost: %s\r\nContent-Type: %s\r\nContent-Length: %d\r\n%s\r\n%s", |
| 889 | method, ctxt->path, ctxt->hostname, *contentType, |
| 890 | len, headers, input); |
| 891 | #endif |
Daniel Veillard | 4ecf39f | 1999-09-22 12:14:03 +0000 | [diff] [blame] | 892 | } |
| 893 | } |
| 894 | } |
| 895 | #ifdef DEBUG_HTTP |
| 896 | printf("-> %s", buf); |
| 897 | #endif |
| 898 | ctxt->outptr = ctxt->out = xmlMemStrdup(buf); |
| 899 | ctxt->state = XML_NANO_HTTP_WRITE; |
| 900 | xmlNanoHTTPSend(ctxt); |
| 901 | ctxt->state = XML_NANO_HTTP_READ; |
| 902 | head = 1; |
| 903 | |
| 904 | while ((p = xmlNanoHTTPReadLine(ctxt)) != NULL) { |
| 905 | if (head && (*p == 0)) { |
| 906 | head = 0; |
| 907 | ctxt->content = ctxt->inrptr; |
| 908 | if (p != NULL) xmlFree(p); |
| 909 | break; |
| 910 | } |
| 911 | xmlNanoHTTPScanAnswer(ctxt, p); |
| 912 | |
| 913 | #ifdef DEBUG_HTTP |
| 914 | if (p != NULL) printf("<- %s\n", p); |
| 915 | #endif |
| 916 | if (p != NULL) xmlFree(p); |
| 917 | } |
| 918 | |
| 919 | if ((ctxt->location != NULL) && (ctxt->returnValue >= 300) && |
| 920 | (ctxt->returnValue < 400)) { |
| 921 | #ifdef DEBUG_HTTP |
| 922 | printf("\nRedirect to: %s\n", ctxt->location); |
| 923 | #endif |
| 924 | while (xmlNanoHTTPRecv(ctxt)) ; |
| 925 | if (nbRedirects < XML_NANO_HTTP_MAX_REDIR) { |
| 926 | nbRedirects++; |
| 927 | redirURL = xmlMemStrdup(ctxt->location); |
| 928 | xmlNanoHTTPFreeCtxt(ctxt); |
| 929 | goto retry; |
| 930 | } |
| 931 | xmlNanoHTTPFreeCtxt(ctxt); |
| 932 | #ifdef DEBUG_HTTP |
| 933 | printf("Too many redirrects, aborting ...\n"); |
| 934 | #endif |
| 935 | return(NULL); |
| 936 | |
| 937 | } |
| 938 | |
| 939 | if ((contentType != NULL) && (ctxt->contentType != NULL)) |
| 940 | *contentType = xmlMemStrdup(ctxt->contentType); |
| 941 | else if (contentType != NULL) |
| 942 | *contentType = NULL; |
| 943 | |
| 944 | #ifdef DEBUG_HTTP |
| 945 | if (ctxt->contentType != NULL) |
| 946 | printf("\nCode %d, content-type '%s'\n\n", |
| 947 | ctxt->returnValue, ctxt->contentType); |
| 948 | else |
| 949 | printf("\nCode %d, no content-type\n\n", |
| 950 | ctxt->returnValue); |
| 951 | #endif |
| 952 | |
| 953 | return((void *) ctxt); |
| 954 | } |
| 955 | |
| 956 | /** |
| 957 | * xmlNanoHTTPFetch: |
| 958 | * @URL: The URL to load |
| 959 | * @filename: the filename where the content should be saved |
| 960 | * @contentType: if available the Content-Type information will be |
| 961 | * returned at that location |
| 962 | * |
| 963 | * This function try to fetch the indicated resource via HTTP GET |
| 964 | * and save it's content in the file. |
| 965 | * |
| 966 | * Returns -1 in case of failure, 0 incase of success. The contentType, |
| 967 | * if provided must be freed by the caller |
| 968 | */ |
| 969 | int |
| 970 | xmlNanoHTTPFetch(const char *URL, const char *filename, char **contentType) { |
| 971 | void *ctxt; |
| 972 | char buf[4096]; |
| 973 | int fd; |
| 974 | int len; |
| 975 | |
| 976 | ctxt = xmlNanoHTTPOpen(URL, contentType); |
| 977 | if (ctxt == NULL) return(-1); |
| 978 | |
| 979 | if (!strcmp(filename, "-")) |
| 980 | fd = 0; |
| 981 | else { |
| 982 | fd = open(filename, O_CREAT | O_WRONLY); |
| 983 | if (fd < 0) { |
| 984 | xmlNanoHTTPClose(ctxt); |
| 985 | if ((contentType != NULL) && (*contentType != NULL)) { |
| 986 | xmlFree(*contentType); |
| 987 | *contentType = NULL; |
| 988 | } |
| 989 | return(-1); |
| 990 | } |
| 991 | } |
| 992 | |
| 993 | while ((len = xmlNanoHTTPRead(ctxt, buf, sizeof(buf))) > 0) { |
| 994 | write(fd, buf, len); |
| 995 | } |
| 996 | |
| 997 | xmlNanoHTTPClose(ctxt); |
| 998 | return(0); |
| 999 | } |
| 1000 | |
| 1001 | /** |
| 1002 | * xmlNanoHTTPSave: |
| 1003 | * @ctx: the HTTP context |
| 1004 | * @filename: the filename where the content should be saved |
| 1005 | * |
| 1006 | * This function saves the output of the HTTP transaction to a file |
| 1007 | * It closes and free the context at the end |
| 1008 | * |
| 1009 | * Returns -1 in case of failure, 0 incase of success. |
| 1010 | */ |
| 1011 | int |
| 1012 | xmlNanoHTTPSave(void *ctxt, const char *filename) { |
| 1013 | char buf[4096]; |
| 1014 | int fd; |
| 1015 | int len; |
| 1016 | |
| 1017 | if (ctxt == NULL) return(-1); |
| 1018 | |
| 1019 | if (!strcmp(filename, "-")) |
| 1020 | fd = 0; |
| 1021 | else { |
| 1022 | fd = open(filename, O_CREAT | O_WRONLY); |
| 1023 | if (fd < 0) { |
| 1024 | xmlNanoHTTPClose(ctxt); |
| 1025 | return(-1); |
| 1026 | } |
| 1027 | } |
| 1028 | |
| 1029 | while ((len = xmlNanoHTTPRead(ctxt, buf, sizeof(buf))) > 0) { |
| 1030 | write(fd, buf, len); |
| 1031 | } |
| 1032 | |
| 1033 | xmlNanoHTTPClose(ctxt); |
| 1034 | return(0); |
| 1035 | } |
| 1036 | |
| 1037 | /** |
| 1038 | * xmlNanoHTTPReturnCode: |
| 1039 | * @ctx: the HTTP context |
| 1040 | * |
| 1041 | * Returns the HTTP return code for the request. |
| 1042 | */ |
| 1043 | int |
| 1044 | xmlNanoHTTPReturnCode(void *ctx) { |
| 1045 | xmlNanoHTTPCtxtPtr ctxt = (xmlNanoHTTPCtxtPtr) ctx; |
| 1046 | |
| 1047 | if (ctxt == NULL) return(-1); |
| 1048 | |
| 1049 | return(ctxt->returnValue); |
| 1050 | } |
| 1051 | |
| 1052 | #ifdef STANDALONE |
| 1053 | int main(int argc, char **argv) { |
| 1054 | char *contentType = NULL; |
| 1055 | |
| 1056 | if (argv[1] != NULL) { |
| 1057 | if (argv[2] != NULL) |
| 1058 | xmlNanoHTTPFetch(argv[1], argv[2], &contentType); |
| 1059 | else |
| 1060 | xmlNanoHTTPFetch(argv[1], "-", &contentType); |
| 1061 | if (contentType != NULL) xmlFree(contentType); |
| 1062 | } else { |
| 1063 | printf("%s: minimal HTTP GET implementation\n", argv[0]); |
| 1064 | printf("\tusage %s [ URL [ filename ] ]\n", argv[0]); |
| 1065 | } |
| 1066 | return(0); |
| 1067 | } |
| 1068 | #endif /* STANDALONE */ |