| /* |
| * Mini dpkg implementation for busybox. |
| * This is not meant as a replacemnt for dpkg |
| * |
| * Written By Glenn McGrath with the help of others |
| * Copyright (C) 2001 by Glenn McGrath |
| * |
| * Started life as a busybox implementation of udpkg |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| /* |
| * Known difference between busybox dpkg and the official dpkg that i dont |
| * consider important, its worth keeping a note of differences anyway, just to |
| * make it easier to maintain. |
| * - The first value for the Confflile: field isnt placed on a new line. |
| * - The <package>.control file is extracted and kept in the info dir. |
| * - When installing a package the Status: field is placed at the end of the |
| * section, rather than just after the Package: field. |
| * - Packages with previously unknown status are inserted at the begining of |
| * the status file |
| * |
| * Bugs that need to be fixed |
| * - (unknown, please let me know when you find any) |
| * |
| */ |
| |
| #include <fcntl.h> |
| #include <getopt.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include "unarchive.h" |
| #include "busybox.h" |
| |
| /* NOTE: If you vary HASH_PRIME sizes be aware, |
| * 1) Tweaking these will have a big effect on how much memory this program uses. |
| * 2) For computational efficiency these hash tables should be at least 20% |
| * larger than the maximum number of elements stored in it. |
| * 3) All _HASH_PRIME's must be a prime number or chaos is assured, if your looking |
| * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt |
| * 4) If you go bigger than 15 bits you may get into trouble (untested) as its |
| * sometimes cast to an unsigned int, if you go to 16 bit you will overlap |
| * int's and chaos is assured, 16381 is the max prime for 14 bit field |
| */ |
| |
| /* NAME_HASH_PRIME, Stores package names and versions, |
| * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME, |
| * as there a lot of duplicate version numbers */ |
| #define NAME_HASH_PRIME 16381 |
| char *name_hashtable[NAME_HASH_PRIME + 1]; |
| |
| /* PACKAGE_HASH_PRIME, Maximum number of unique packages, |
| * It must not be smaller than STATUS_HASH_PRIME, |
| * Currently only packages from status_hashtable are stored in here, but in |
| * future this may be used to store packages not only from a status file, |
| * but an available_hashtable, and even multiple packages files. |
| * Package can be stored more than once if they have different versions. |
| * e.g. The same package may have different versions in the status file |
| * and available file */ |
| #define PACKAGE_HASH_PRIME 10007 |
| typedef struct edge_s { |
| unsigned int operator:3; |
| unsigned int type:4; |
| unsigned int name:14; |
| unsigned int version:14; |
| } edge_t; |
| |
| typedef struct common_node_s { |
| unsigned int name:14; |
| unsigned int version:14; |
| unsigned int num_of_edges:14; |
| edge_t **edge; |
| } common_node_t; |
| common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1]; |
| |
| /* Currently it doesnt store packages that have state-status of not-installed |
| * So it only really has to be the size of the maximum number of packages |
| * likely to be installed at any one time, so there is a bit of leaway here */ |
| #define STATUS_HASH_PRIME 8191 |
| typedef struct status_node_s { |
| unsigned int package:14; /* has to fit PACKAGE_HASH_PRIME */ |
| unsigned int status:14; /* has to fit STATUS_HASH_PRIME */ |
| } status_node_t; |
| status_node_t *status_hashtable[STATUS_HASH_PRIME + 1]; |
| |
| /* Even numbers are for 'extras', like ored dependecies or null */ |
| enum edge_type_e { |
| EDGE_NULL = 0, |
| EDGE_PRE_DEPENDS = 1, |
| EDGE_OR_PRE_DEPENDS = 2, |
| EDGE_DEPENDS = 3, |
| EDGE_OR_DEPENDS = 4, |
| EDGE_REPLACES = 5, |
| EDGE_PROVIDES = 7, |
| EDGE_CONFLICTS = 9, |
| EDGE_SUGGESTS = 11, |
| EDGE_RECOMMENDS = 13, |
| EDGE_ENHANCES = 15 |
| }; |
| enum operator_e { |
| VER_NULL = 0, |
| VER_EQUAL = 1, |
| VER_LESS = 2, |
| VER_LESS_EQUAL = 3, |
| VER_MORE = 4, |
| VER_MORE_EQUAL = 5, |
| VER_ANY = 6 |
| }; |
| |
| enum dpkg_opt_e { |
| dpkg_opt_purge = 1, |
| dpkg_opt_remove = 2, |
| dpkg_opt_unpack = 4, |
| dpkg_opt_configure = 8, |
| dpkg_opt_install = 16, |
| dpkg_opt_package_name = 32, |
| dpkg_opt_filename = 64, |
| dpkg_opt_list_installed = 128, |
| dpkg_opt_force_ignore_depends = 256 |
| }; |
| |
| typedef struct deb_file_s { |
| char *control_file; |
| char *filename; |
| unsigned int package:14; |
| } deb_file_t; |
| |
| |
| void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime) |
| { |
| unsigned long int hash_num = key[0]; |
| int len = strlen(key); |
| int i; |
| |
| /* Maybe i should have uses a "proper" hashing algorithm here instead |
| * of making one up myself, seems to be working ok though. */ |
| for(i = 1; i < len; i++) { |
| /* shifts the ascii based value and adds it to previous value |
| * shift amount is mod 24 because long int is 32 bit and data |
| * to be shifted is 8, dont want to shift data to where it has |
| * no effect*/ |
| hash_num += ((key[i] + key[i-1]) << ((key[i] * i) % 24)); |
| } |
| *start = (unsigned int) hash_num % hash_prime; |
| *decrement = (unsigned int) 1 + (hash_num % (hash_prime - 1)); |
| } |
| |
| /* this adds the key to the hash table */ |
| int search_name_hashtable(const char *key) |
| { |
| unsigned int probe_address = 0; |
| unsigned int probe_decrement = 0; |
| // char *temp; |
| |
| make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME); |
| while(name_hashtable[probe_address] != NULL) { |
| if (strcmp(name_hashtable[probe_address], key) == 0) { |
| return(probe_address); |
| } else { |
| probe_address -= probe_decrement; |
| if ((int)probe_address < 0) { |
| probe_address += NAME_HASH_PRIME; |
| } |
| } |
| } |
| name_hashtable[probe_address] = xstrdup(key); |
| return(probe_address); |
| } |
| |
| /* this DOESNT add the key to the hashtable |
| * TODO make it consistent with search_name_hashtable |
| */ |
| unsigned int search_status_hashtable(const char *key) |
| { |
| unsigned int probe_address = 0; |
| unsigned int probe_decrement = 0; |
| |
| make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME); |
| while(status_hashtable[probe_address] != NULL) { |
| if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) { |
| break; |
| } else { |
| probe_address -= probe_decrement; |
| if ((int)probe_address < 0) { |
| probe_address += STATUS_HASH_PRIME; |
| } |
| } |
| } |
| return(probe_address); |
| } |
| |
| /* Need to rethink version comparison, maybe the official dpkg has something i can use ? */ |
| int version_compare_part(const char *version1, const char *version2) |
| { |
| int upstream_len1 = 0; |
| int upstream_len2 = 0; |
| char *name1_char; |
| char *name2_char; |
| int len1 = 0; |
| int len2 = 0; |
| int tmp_int; |
| int ver_num1; |
| int ver_num2; |
| int ret; |
| |
| if (version1 == NULL) { |
| version1 = xstrdup(""); |
| } |
| if (version2 == NULL) { |
| version2 = xstrdup(""); |
| } |
| upstream_len1 = strlen(version1); |
| upstream_len2 = strlen(version2); |
| |
| while ((len1 < upstream_len1) || (len2 < upstream_len2)) { |
| /* Compare non-digit section */ |
| tmp_int = strcspn(&version1[len1], "0123456789"); |
| name1_char = xstrndup(&version1[len1], tmp_int); |
| len1 += tmp_int; |
| tmp_int = strcspn(&version2[len2], "0123456789"); |
| name2_char = xstrndup(&version2[len2], tmp_int); |
| len2 += tmp_int; |
| tmp_int = strcmp(name1_char, name2_char); |
| free(name1_char); |
| free(name2_char); |
| if (tmp_int != 0) { |
| ret = tmp_int; |
| goto cleanup_version_compare_part; |
| } |
| |
| /* Compare digits */ |
| tmp_int = strspn(&version1[len1], "0123456789"); |
| name1_char = xstrndup(&version1[len1], tmp_int); |
| len1 += tmp_int; |
| tmp_int = strspn(&version2[len2], "0123456789"); |
| name2_char = xstrndup(&version2[len2], tmp_int); |
| len2 += tmp_int; |
| ver_num1 = atoi(name1_char); |
| ver_num2 = atoi(name2_char); |
| free(name1_char); |
| free(name2_char); |
| if (ver_num1 < ver_num2) { |
| ret = -1; |
| goto cleanup_version_compare_part; |
| } |
| else if (ver_num1 > ver_num2) { |
| ret = 1; |
| goto cleanup_version_compare_part; |
| } |
| } |
| ret = 0; |
| cleanup_version_compare_part: |
| return(ret); |
| } |
| |
| /* if ver1 < ver2 return -1, |
| * if ver1 = ver2 return 0, |
| * if ver1 > ver2 return 1, |
| */ |
| int version_compare(const unsigned int ver1, const unsigned int ver2) |
| { |
| char *ch_ver1 = name_hashtable[ver1]; |
| char *ch_ver2 = name_hashtable[ver2]; |
| |
| char epoch1, epoch2; |
| char *deb_ver1, *deb_ver2; |
| char *ver1_ptr, *ver2_ptr; |
| char *upstream_ver1; |
| char *upstream_ver2; |
| int result; |
| |
| /* Compare epoch */ |
| if (ch_ver1[1] == ':') { |
| epoch1 = ch_ver1[0]; |
| ver1_ptr = strchr(ch_ver1, ':') + 1; |
| } else { |
| epoch1 = '0'; |
| ver1_ptr = ch_ver1; |
| } |
| if (ch_ver2[1] == ':') { |
| epoch2 = ch_ver2[0]; |
| ver2_ptr = strchr(ch_ver2, ':') + 1; |
| } else { |
| epoch2 = '0'; |
| ver2_ptr = ch_ver2; |
| } |
| if (epoch1 < epoch2) { |
| return(-1); |
| } |
| else if (epoch1 > epoch2) { |
| return(1); |
| } |
| |
| /* Compare upstream version */ |
| upstream_ver1 = xstrdup(ver1_ptr); |
| upstream_ver2 = xstrdup(ver2_ptr); |
| |
| /* Chop off debian version, and store for later use */ |
| deb_ver1 = strrchr(upstream_ver1, '-'); |
| deb_ver2 = strrchr(upstream_ver2, '-'); |
| if (deb_ver1) { |
| deb_ver1[0] = '\0'; |
| deb_ver1++; |
| } |
| if (deb_ver2) { |
| deb_ver2[0] = '\0'; |
| deb_ver2++; |
| } |
| result = version_compare_part(upstream_ver1, upstream_ver2); |
| |
| free(upstream_ver1); |
| free(upstream_ver2); |
| |
| if (result != 0) { |
| return(result); |
| } |
| |
| /* Compare debian versions */ |
| return(version_compare_part(deb_ver1, deb_ver2)); |
| } |
| |
| int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator) |
| { |
| const int version_result = version_compare(version1, version2); |
| switch(operator) { |
| case (VER_ANY): |
| return(TRUE); |
| case (VER_EQUAL): |
| if (version_result == 0) { |
| return(TRUE); |
| } |
| break; |
| case (VER_LESS): |
| if (version_result < 0) { |
| return(TRUE); |
| } |
| break; |
| case (VER_LESS_EQUAL): |
| if (version_result <= 0) { |
| return(TRUE); |
| } |
| break; |
| case (VER_MORE): |
| if (version_result > 0) { |
| return(TRUE); |
| } |
| break; |
| case (VER_MORE_EQUAL): |
| if (version_result >= 0) { |
| return(TRUE); |
| } |
| break; |
| } |
| return(FALSE); |
| } |
| |
| |
| int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator) |
| { |
| unsigned int probe_address = 0; |
| unsigned int probe_decrement = 0; |
| |
| make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME); |
| while(package_hashtable[probe_address] != NULL) { |
| if (package_hashtable[probe_address]->name == name) { |
| if (operator == VER_ANY) { |
| return(probe_address); |
| } |
| if (test_version(package_hashtable[probe_address]->version, version, operator)) { |
| return(probe_address); |
| } |
| } |
| probe_address -= probe_decrement; |
| if ((int)probe_address < 0) { |
| probe_address += PACKAGE_HASH_PRIME; |
| } |
| } |
| return(probe_address); |
| } |
| |
| /* |
| * Create one new node and one new edge for every dependency. |
| */ |
| void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type) |
| { |
| char *line = xstrdup(whole_line); |
| char *line2; |
| char *line_ptr1 = NULL; |
| char *line_ptr2 = NULL; |
| char *field; |
| char *field2; |
| char *version; |
| edge_t *edge; |
| int offset_ch; |
| int type; |
| |
| field = strtok_r(line, ",", &line_ptr1); |
| do { |
| line2 = xstrdup(field); |
| field2 = strtok_r(line2, "|", &line_ptr2); |
| if ((edge_type == EDGE_DEPENDS) && (strcmp(field, field2) != 0)) { |
| type = EDGE_OR_DEPENDS; |
| } |
| else if ((edge_type == EDGE_PRE_DEPENDS) && (strcmp(field, field2) != 0)) { |
| type = EDGE_OR_PRE_DEPENDS; |
| } else { |
| type = edge_type; |
| } |
| |
| do { |
| edge = (edge_t *) xmalloc(sizeof(edge_t)); |
| edge->type = type; |
| |
| /* Skip any extra leading spaces */ |
| field2 += strspn(field2, " "); |
| |
| /* Get dependency version info */ |
| version = strchr(field2, '('); |
| if (version == NULL) { |
| edge->operator = VER_ANY; |
| /* Get the versions hash number, adding it if the number isnt already in there */ |
| edge->version = search_name_hashtable("ANY"); |
| } else { |
| /* Skip leading ' ' or '(' */ |
| version += strspn(field2, " "); |
| version += strspn(version, "("); |
| /* Calculate length of any operator charactors */ |
| offset_ch = strspn(version, "<=>"); |
| /* Determine operator */ |
| if (offset_ch > 0) { |
| if (strncmp(version, "=", offset_ch) == 0) { |
| edge->operator = VER_EQUAL; |
| } |
| else if (strncmp(version, "<<", offset_ch) == 0) { |
| edge->operator = VER_LESS; |
| } |
| else if (strncmp(version, "<=", offset_ch) == 0) { |
| edge->operator = VER_LESS_EQUAL; |
| } |
| else if (strncmp(version, ">>", offset_ch) == 0) { |
| edge->operator = VER_MORE; |
| } |
| else if (strncmp(version, ">=", offset_ch) == 0) { |
| edge->operator = VER_MORE_EQUAL; |
| } else { |
| error_msg_and_die("Illegal operator\n"); |
| } |
| } |
| /* skip to start of version numbers */ |
| version += offset_ch; |
| version += strspn(version, " "); |
| |
| /* Truncate version at trailing ' ' or ')' */ |
| version[strcspn(version, " )")] = '\0'; |
| /* Get the versions hash number, adding it if the number isnt already in there */ |
| edge->version = search_name_hashtable(version); |
| } |
| |
| /* Get the dependency name */ |
| field2[strcspn(field2, " (")] = '\0'; |
| edge->name = search_name_hashtable(field2); |
| |
| /* link the new edge to the current node */ |
| parent_node->num_of_edges++; |
| parent_node->edge = xrealloc(parent_node->edge, sizeof(edge_t) * (parent_node->num_of_edges + 1)); |
| parent_node->edge[parent_node->num_of_edges - 1] = edge; |
| } while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL); |
| free(line2); |
| } while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL); |
| free(line); |
| |
| return; |
| } |
| |
| void free_package(common_node_t *node) |
| { |
| unsigned short i; |
| if (node) { |
| for (i = 0; i < node->num_of_edges; i++) { |
| if (node->edge[i]) { |
| free(node->edge[i]); |
| } |
| } |
| if (node->edge) { |
| free(node->edge); |
| } |
| free(node); |
| } |
| } |
| |
| unsigned int fill_package_struct(char *control_buffer) |
| { |
| common_node_t *new_node = (common_node_t *) xcalloc(1, sizeof(common_node_t)); |
| |
| char *field_name; |
| char *field_value; |
| int field_start = 0; |
| int num = -1; |
| int buffer_length = strlen(control_buffer); |
| |
| new_node->version = search_name_hashtable("unknown"); |
| while (field_start < buffer_length) { |
| field_start += read_package_field(&control_buffer[field_start], |
| &field_name, &field_value); |
| |
| if (field_name == NULL) { |
| goto fill_package_struct_cleanup; // Oh no, the dreaded goto statement !! |
| } |
| |
| if (strcmp(field_name, "Package") == 0) { |
| new_node->name = search_name_hashtable(field_value); |
| } |
| else if (strcmp(field_name, "Version") == 0) { |
| new_node->version = search_name_hashtable(field_value); |
| } |
| else if (strcmp(field_name, "Pre-Depends") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS); |
| } |
| else if (strcmp(field_name, "Depends") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_DEPENDS); |
| } |
| else if (strcmp(field_name, "Replaces") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_REPLACES); |
| } |
| else if (strcmp(field_name, "Provides") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_PROVIDES); |
| } |
| else if (strcmp(field_name, "Conflicts") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_CONFLICTS); |
| } |
| else if (strcmp(field_name, "Suggests") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_SUGGESTS); |
| } |
| else if (strcmp(field_name, "Recommends") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS); |
| } |
| else if (strcmp(field_name, "Enhances") == 0) { |
| add_split_dependencies(new_node, field_value, EDGE_ENHANCES); |
| } |
| fill_package_struct_cleanup: |
| if (field_name) { |
| free(field_name); |
| } |
| if (field_value) { |
| free(field_value); |
| } |
| } |
| |
| if (new_node->version == search_name_hashtable("unknown")) { |
| free_package(new_node); |
| return(-1); |
| } |
| num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL); |
| if (package_hashtable[num] == NULL) { |
| package_hashtable[num] = new_node; |
| } else { |
| free_package(new_node); |
| } |
| return(num); |
| } |
| |
| /* if num = 1, it returns the want status, 2 returns flag, 3 returns status */ |
| unsigned int get_status(const unsigned int status_node, const int num) |
| { |
| char *status_string = name_hashtable[status_hashtable[status_node]->status]; |
| char *state_sub_string; |
| unsigned int state_sub_num; |
| int len; |
| int i; |
| |
| /* set tmp_string to point to the start of the word number */ |
| for (i = 1; i < num; i++) { |
| /* skip past a word */ |
| status_string += strcspn(status_string, " "); |
| /* skip past the seperating spaces */ |
| status_string += strspn(status_string, " "); |
| } |
| len = strcspn(status_string, " \n\0"); |
| state_sub_string = xstrndup(status_string, len); |
| state_sub_num = search_name_hashtable(state_sub_string); |
| free(state_sub_string); |
| return(state_sub_num); |
| } |
| |
| void set_status(const unsigned int status_node_num, const char *new_value, const int position) |
| { |
| const unsigned int new_value_len = strlen(new_value); |
| const unsigned int new_value_num = search_name_hashtable(new_value); |
| unsigned int want = get_status(status_node_num, 1); |
| unsigned int flag = get_status(status_node_num, 2); |
| unsigned int status = get_status(status_node_num, 3); |
| int want_len = strlen(name_hashtable[want]); |
| int flag_len = strlen(name_hashtable[flag]); |
| int status_len = strlen(name_hashtable[status]); |
| char *new_status; |
| |
| switch (position) { |
| case (1): |
| want = new_value_num; |
| want_len = new_value_len; |
| break; |
| case (2): |
| flag = new_value_num; |
| flag_len = new_value_len; |
| break; |
| case (3): |
| status = new_value_num; |
| status_len = new_value_len; |
| break; |
| default: |
| error_msg_and_die("DEBUG ONLY: this shouldnt happen"); |
| } |
| |
| new_status = (char *) xmalloc(want_len + flag_len + status_len + 3); |
| sprintf(new_status, "%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]); |
| status_hashtable[status_node_num]->status = search_name_hashtable(new_status); |
| free(new_status); |
| return; |
| } |
| |
| void index_status_file(const char *filename) |
| { |
| FILE *status_file; |
| char *control_buffer; |
| char *status_line; |
| status_node_t *status_node = NULL; |
| unsigned int status_num; |
| |
| status_file = xfopen(filename, "r"); |
| while ((control_buffer = fgets_str(status_file, "\n\n")) != NULL) { |
| const unsigned int package_num = fill_package_struct(control_buffer); |
| if (package_num != -1) { |
| status_node = xmalloc(sizeof(status_node_t)); |
| /* fill_package_struct doesnt handle the status field */ |
| status_line = strstr(control_buffer, "Status:"); |
| if (status_line != NULL) { |
| status_line += 7; |
| status_line += strspn(status_line, " \n\t"); |
| status_line = xstrndup(status_line, strcspn(status_line, "\n\0")); |
| status_node->status = search_name_hashtable(status_line); |
| free(status_line); |
| } |
| status_node->package = package_num; |
| status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]); |
| status_hashtable[status_num] = status_node; |
| } |
| free(control_buffer); |
| } |
| fclose(status_file); |
| return; |
| } |
| |
| |
| char *get_depends_field(common_node_t *package, const int depends_type) |
| { |
| char *depends = NULL; |
| char *old_sep = (char *)xcalloc(1, 3); |
| char *new_sep = (char *)xcalloc(1, 3); |
| int line_size = 0; |
| int depends_size; |
| |
| int i; |
| |
| for (i = 0; i < package->num_of_edges; i++) { |
| if ((package->edge[i]->type == EDGE_OR_PRE_DEPENDS) || |
| (package->edge[i]->type == EDGE_OR_DEPENDS)) { |
| } |
| |
| if ((package->edge[i]->type == depends_type) || |
| (package->edge[i]->type == depends_type + 1)) { |
| /* Check if its the first time through */ |
| |
| depends_size = 8 + strlen(name_hashtable[package->edge[i]->name]) |
| + strlen(name_hashtable[package->edge[i]->version]); |
| line_size += depends_size; |
| depends = (char *) xrealloc(depends, line_size + 1); |
| |
| /* Check to see if this dependency is the type we are looking for |
| * +1 to check for 'extra' types, e.g. ored dependecies */ |
| strcpy(old_sep, new_sep); |
| if (package->edge[i]->type == depends_type) { |
| strcpy(new_sep, ", "); |
| } |
| else if (package->edge[i]->type == depends_type + 1) { |
| strcpy(new_sep, "| "); |
| } |
| |
| if (depends_size == line_size) { |
| strcpy(depends, ""); |
| } else { |
| if ((strcmp(old_sep, "| ") == 0) && (strcmp(new_sep, "| ") == 0)) { |
| strcat(depends, " | "); |
| } else { |
| strcat(depends, ", "); |
| } |
| } |
| |
| strcat(depends, name_hashtable[package->edge[i]->name]); |
| if (strcmp(name_hashtable[package->edge[i]->version], "NULL") != 0) { |
| if (package->edge[i]->operator == VER_EQUAL) { |
| strcat(depends, " (= "); |
| } |
| else if (package->edge[i]->operator == VER_LESS) { |
| strcat(depends, " (<< "); |
| } |
| else if (package->edge[i]->operator == VER_LESS_EQUAL) { |
| strcat(depends, " (<= "); |
| } |
| else if (package->edge[i]->operator == VER_MORE) { |
| strcat(depends, " (>> "); |
| } |
| else if (package->edge[i]->operator == VER_MORE_EQUAL) { |
| strcat(depends, " (>= "); |
| } else { |
| strcat(depends, " ("); |
| } |
| strcat(depends, name_hashtable[package->edge[i]->version]); |
| strcat(depends, ")"); |
| } |
| } |
| } |
| return(depends); |
| } |
| |
| void write_buffer_no_status(FILE *new_status_file, const char *control_buffer) |
| { |
| char *name; |
| char *value; |
| int start = 0; |
| while (1) { |
| start += read_package_field(&control_buffer[start], &name, &value); |
| if (name == NULL) { |
| break; |
| } |
| if (strcmp(name, "Status") != 0) { |
| fprintf(new_status_file, "%s: %s\n", name, value); |
| } |
| } |
| return; |
| } |
| |
| /* This could do with a cleanup */ |
| void write_status_file(deb_file_t **deb_file) |
| { |
| FILE *old_status_file = xfopen("/var/lib/dpkg/status", "r"); |
| FILE *new_status_file = xfopen("/var/lib/dpkg/status.udeb", "w"); |
| char *package_name; |
| char *status_from_file; |
| char *control_buffer = NULL; |
| char *tmp_string; |
| int status_num; |
| int field_start = 0; |
| int write_flag; |
| int i = 0; |
| |
| /* Update previously known packages */ |
| while ((control_buffer = fgets_str(old_status_file, "\n\n")) != NULL) { |
| if ((tmp_string = strstr(control_buffer, "Package:")) == NULL) { |
| continue; |
| } |
| |
| tmp_string += 8; |
| tmp_string += strspn(tmp_string, " \n\t"); |
| package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n\0")); |
| write_flag = FALSE; |
| tmp_string = strstr(control_buffer, "Status:"); |
| if (tmp_string != NULL) { |
| /* Seperate the status value from the control buffer */ |
| tmp_string += 7; |
| tmp_string += strspn(tmp_string, " \n\t"); |
| status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n")); |
| } else { |
| status_from_file = NULL; |
| } |
| |
| /* Find this package in the status hashtable */ |
| status_num = search_status_hashtable(package_name); |
| if (status_hashtable[status_num] != NULL) { |
| const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status]; |
| if (strcmp(status_from_file, status_from_hashtable) != 0) { |
| /* New status isnt exactly the same as old status */ |
| const int state_status = get_status(status_num, 3); |
| if ((strcmp("installed", name_hashtable[state_status]) == 0) || |
| (strcmp("unpacked", name_hashtable[state_status]) == 0)) { |
| /* We need to add the control file from the package */ |
| i = 0; |
| while(deb_file[i] != NULL) { |
| if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) { |
| /* Write a status file entry with a modified status */ |
| /* remove trailing \n's */ |
| write_buffer_no_status(new_status_file, deb_file[i]->control_file); |
| set_status(status_num, "ok", 2); |
| fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]); |
| write_flag = TRUE; |
| break; |
| } |
| i++; |
| } |
| /* This is temperary, debugging only */ |
| if (deb_file[i] == NULL) { |
| error_msg_and_die("ALERT: Couldnt find a control file, your status file may be broken, status may be incorrect for %s", package_name); |
| } |
| } |
| else if (strcmp("not-installed", name_hashtable[state_status]) == 0) { |
| /* Only write the Package, Status, Priority and Section lines */ |
| fprintf(new_status_file, "Package: %s\n", package_name); |
| fprintf(new_status_file, "Status: %s\n", status_from_hashtable); |
| |
| while (1) { |
| char *field_name; |
| char *field_value; |
| field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value); |
| if (field_name == NULL) { |
| break; |
| } |
| if ((strcmp(field_name, "Priority") == 0) || |
| (strcmp(field_name, "Section") == 0)) { |
| fprintf(new_status_file, "%s: %s\n", field_name, field_value); |
| } |
| } |
| write_flag = TRUE; |
| fputs("\n", new_status_file); |
| } |
| else if (strcmp("config-files", name_hashtable[state_status]) == 0) { |
| /* only change the status line */ |
| while (1) { |
| char *field_name; |
| char *field_value; |
| field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value); |
| if (field_name == NULL) { |
| break; |
| } |
| /* Setup start point for next field */ |
| if (strcmp(field_name, "Status") == 0) { |
| fprintf(new_status_file, "Status: %s\n", status_from_hashtable); |
| } else { |
| fprintf(new_status_file, "%s: %s\n", field_name, field_value); |
| } |
| } |
| write_flag = TRUE; |
| fputs("\n", new_status_file); |
| } |
| } |
| } |
| /* If the package from the status file wasnt handle above, do it now*/ |
| if (! write_flag) { |
| fprintf(new_status_file, "%s\n\n", control_buffer); |
| } |
| |
| if (status_from_file != NULL) { |
| free(status_from_file); |
| } |
| free(package_name); |
| free(control_buffer); |
| } |
| |
| /* Write any new packages */ |
| for(i = 0; deb_file[i] != NULL; i++) { |
| status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]); |
| if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) { |
| write_buffer_no_status(new_status_file, deb_file[i]->control_file); |
| set_status(status_num, "ok", 2); |
| fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]); |
| } |
| } |
| fclose(old_status_file); |
| fclose(new_status_file); |
| |
| |
| /* Create a seperate backfile to dpkg */ |
| if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) { |
| struct stat stat_buf; |
| if (stat("/var/lib/dpkg/status", &stat_buf) == 0) { |
| error_msg_and_die("Couldnt create backup status file"); |
| } |
| /* Its ok if renaming the status file fails becasue status |
| * file doesnt exist, maybe we are starting from scratch */ |
| error_msg("No status file found, creating new one"); |
| } |
| |
| if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) { |
| error_msg_and_die("DANGER: Couldnt create status file, you need to manually repair your status file"); |
| } |
| } |
| |
| int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count) |
| { |
| int *conflicts = NULL; |
| int conflicts_num = 0; |
| int state_status; |
| int state_flag; |
| int state_want; |
| int i = deb_start; |
| int j; |
| |
| /* Check for conflicts |
| * TODO: TEST if conflicts with other packages to be installed |
| * |
| * Add install packages and the packages they provide |
| * to the list of files to check conflicts for |
| */ |
| |
| /* Create array of package numbers to check against |
| * installed package for conflicts*/ |
| while (deb_file[i] != NULL) { |
| const unsigned int package_num = deb_file[i]->package; |
| conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1)); |
| conflicts[conflicts_num] = package_num; |
| conflicts_num++; |
| /* add provides to conflicts list */ |
| for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) { |
| if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) { |
| const int conflicts_package_num = search_package_hashtable( |
| package_hashtable[package_num]->edge[j]->name, |
| package_hashtable[package_num]->edge[j]->version, |
| package_hashtable[package_num]->edge[j]->operator); |
| if (package_hashtable[conflicts_package_num] == NULL) { |
| /* create a new package */ |
| common_node_t *new_node = (common_node_t *) xmalloc(sizeof(common_node_t)); |
| new_node->name = package_hashtable[package_num]->edge[j]->name; |
| new_node->version = package_hashtable[package_num]->edge[j]->version; |
| new_node->num_of_edges = 0; |
| new_node->edge = NULL; |
| package_hashtable[conflicts_package_num] = new_node; |
| } |
| conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1)); |
| conflicts[conflicts_num] = conflicts_package_num; |
| conflicts_num++; |
| } |
| } |
| i++; |
| } |
| |
| /* Check conflicts */ |
| i = 0; |
| while (deb_file[i] != NULL) { |
| const common_node_t *package_node = package_hashtable[deb_file[i]->package]; |
| int status_num = 0; |
| status_num = search_status_hashtable(name_hashtable[package_node->name]); |
| |
| if (get_status(status_num, 3) == search_name_hashtable("installed")) { |
| i++; |
| continue; |
| } |
| |
| for (j = 0; j < package_node->num_of_edges; j++) { |
| const edge_t *package_edge = package_node->edge[j]; |
| const unsigned int package_num = |
| search_package_hashtable(package_edge->name, |
| package_edge->version, package_edge->operator); |
| |
| if (package_edge->type == EDGE_CONFLICTS) { |
| int result = 0; |
| if (package_hashtable[package_num] != NULL) { |
| status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]); |
| state_status = get_status(status_num, 3); |
| state_flag = get_status(status_num, 1); |
| |
| result = (state_status == search_name_hashtable("installed")) || |
| (state_flag == search_name_hashtable("want-install")); |
| |
| if (result) { |
| result = test_version(package_hashtable[deb_file[i]->package]->version, |
| package_edge->version, package_edge->operator); |
| } |
| } |
| |
| if (result) { |
| error_msg_and_die("Package %s conflicts with %s", |
| name_hashtable[package_node->name], |
| name_hashtable[package_edge->name]); |
| } |
| } |
| } |
| i++; |
| } |
| |
| |
| /* Check dependendcies */ |
| i = 0; |
| while (deb_file[i] != NULL) { |
| const common_node_t *package_node = package_hashtable[deb_file[i]->package]; |
| int status_num = 0; |
| |
| status_num = search_status_hashtable(name_hashtable[package_node->name]); |
| state_status = get_status(status_num, 3); |
| state_want = get_status(status_num, 1); |
| |
| if (state_status == search_name_hashtable("installed")) { |
| i++; |
| continue; |
| } |
| |
| for (j = 0; j < package_hashtable[deb_file[i]->package]->num_of_edges; j++) { |
| const edge_t *package_edge = package_node->edge[j]; |
| unsigned int package_num; |
| |
| package_num = search_package_hashtable(package_edge->name, package_edge->version, package_edge->operator); |
| |
| switch (package_edge->type) { |
| case(EDGE_PRE_DEPENDS): |
| case(EDGE_OR_PRE_DEPENDS): { |
| int result=1; |
| /* It must be already installed */ |
| /* NOTE: This is untested, nothing apropriate in my status file */ |
| if (package_hashtable[package_num] != NULL) { |
| status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]); |
| state_status = get_status(status_num, 3); |
| state_want = get_status(status_num, 1); |
| result = (state_status != search_name_hashtable("installed")); |
| } |
| |
| if (result) { |
| error_msg_and_die("Package %s pre-depends on %s, but it is not installed", |
| name_hashtable[package_node->name], |
| name_hashtable[package_edge->name]); |
| } |
| break; |
| } |
| case(EDGE_DEPENDS): |
| case(EDGE_OR_DEPENDS): { |
| int result=1; |
| if (package_hashtable[package_num] != NULL) { |
| status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]); |
| state_status = get_status(status_num, 3); |
| state_want = get_status(status_num, 1); |
| result=(state_status != search_name_hashtable("installed")) && (state_want != search_name_hashtable("want-install")); |
| } |
| /* It must be already installed, or to be installed */ |
| if (result) { |
| error_msg_and_die("Package %s depends on %s, but it is not installed, or flaged to be installed", |
| name_hashtable[package_node->name], |
| name_hashtable[package_edge->name]); |
| } |
| break; |
| } |
| } |
| } |
| i++; |
| } |
| free(conflicts); |
| return(TRUE); |
| } |
| |
| char **create_list(const char *filename) |
| { |
| FILE *list_stream; |
| char **file_list = NULL; |
| char *line = NULL; |
| int length = 0; |
| int count = 0; |
| |
| /* dont use [xw]fopen here, handle error ourself */ |
| list_stream = fopen(filename, "r"); |
| if (list_stream == NULL) { |
| return(NULL); |
| } |
| |
| while (getline(&line, &length, list_stream) != -1) { |
| file_list = xrealloc(file_list, sizeof(char *) * (count + 2)); |
| chomp(line); |
| file_list[count] = xstrdup(line); |
| count++; |
| } |
| fclose(list_stream); |
| free(line); |
| |
| if (count == 0) { |
| return(NULL); |
| } else { |
| file_list[count] = NULL; |
| return(file_list); |
| } |
| } |
| |
| /* maybe i should try and hook this into remove_file.c somehow */ |
| int remove_file_array(char **remove_names, char **exclude_names) |
| { |
| struct stat path_stat; |
| int match_flag; |
| int remove_flag = FALSE; |
| int i,j; |
| |
| if (remove_names == NULL) { |
| return(FALSE); |
| } |
| for (i = 0; remove_names[i] != NULL; i++) { |
| match_flag = FALSE; |
| if (exclude_names != NULL) { |
| for (j = 0; exclude_names[j] != 0; j++) { |
| if (strcmp(remove_names[i], exclude_names[j]) == 0) { |
| match_flag = TRUE; |
| break; |
| } |
| } |
| } |
| if (!match_flag) { |
| if (lstat(remove_names[i], &path_stat) < 0) { |
| continue; |
| } |
| if (S_ISDIR(path_stat.st_mode)) { |
| if (rmdir(remove_names[i]) != -1) { |
| remove_flag = TRUE; |
| } |
| } else { |
| if (unlink(remove_names[i]) != -1) { |
| remove_flag = TRUE; |
| } |
| } |
| } |
| } |
| return(remove_flag); |
| } |
| |
| int run_package_script(const char *package_name, const char *script_type) |
| { |
| struct stat path_stat; |
| char *script_path; |
| int result; |
| |
| script_path = xmalloc(strlen(package_name) + strlen(script_type) + 21); |
| sprintf(script_path, "/var/lib/dpkg/info/%s.%s", package_name, script_type); |
| |
| /* If the file doesnt exist is isnt a fatal */ |
| if (lstat(script_path, &path_stat) < 0) { |
| result = EXIT_SUCCESS; |
| } else { |
| result = system(script_path); |
| } |
| free(script_path); |
| return(result); |
| } |
| |
| char **all_control_list(const char *package_name) |
| { |
| const char *extensions[11] = {"preinst", "postinst", "prerm", "postrm", |
| "list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL }; |
| unsigned short i = 0; |
| char **remove_files; |
| |
| /* Create a list of all /var/lib/dpkg/info/<package> files */ |
| remove_files = malloc(sizeof(char *) * 11); |
| while (extensions[i]) { |
| remove_files[i] = xmalloc(strlen(package_name) + strlen(extensions[i]) + 21); |
| sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, extensions[i]); |
| i++; |
| } |
| remove_files[10] = NULL; |
| |
| return(remove_files); |
| } |
| |
| void free_array(char **array) |
| { |
| |
| if (array) { |
| unsigned short i = 0; |
| while (array[i]) { |
| free(array[i]); |
| i++; |
| } |
| free(array); |
| } |
| } |
| |
| /* This function lists information on the installed packages. It loops through |
| * the status_hashtable to retrieve the info. This results in smaller code than |
| * scanning the status file. The resulting list, however, is unsorted. |
| */ |
| void list_packages(void) |
| { |
| int i; |
| |
| printf(" Name Version\n"); |
| printf("+++-==============-==============\n"); |
| |
| /* go through status hash, dereference package hash and finally strings */ |
| for (i=0; i<STATUS_HASH_PRIME+1; i++) { |
| |
| if (status_hashtable[i]) { |
| const char *stat_str; /* status string */ |
| const char *name_str; /* package name */ |
| const char *vers_str; /* version */ |
| char s1, s2; /* status abbreviations */ |
| int spccnt; /* space count */ |
| int j; |
| |
| stat_str = name_hashtable[status_hashtable[i]->status]; |
| name_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->name]; |
| vers_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->version]; |
| |
| /* get abbreviation for status field 1 */ |
| s1 = stat_str[0] == 'i' ? 'i' : 'r'; |
| |
| /* get abbreviation for status field 2 */ |
| for (j=0, spccnt=0; stat_str[j] && spccnt<2; j++) { |
| if (stat_str[j] == ' ') spccnt++; |
| } |
| s2 = stat_str[j]; |
| |
| /* print out the line formatted like Debian dpkg */ |
| printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str); |
| } |
| } |
| } |
| |
| void remove_package(const unsigned int package_num) |
| { |
| const char *package_name = name_hashtable[package_hashtable[package_num]->name]; |
| const unsigned int status_num = search_status_hashtable(package_name); |
| const int package_name_length = strlen(package_name); |
| char **remove_files; |
| char **exclude_files; |
| char list_name[package_name_length + 25]; |
| char conffile_name[package_name_length + 30]; |
| int return_value; |
| |
| printf("Removing %s ...\n", package_name); |
| |
| /* run prerm script */ |
| return_value = run_package_script(package_name, "prerm"); |
| if (return_value == -1) { |
| error_msg_and_die("script failed, prerm failure"); |
| } |
| |
| /* Create a list of files to remove, and a seperate list of those to keep */ |
| sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name); |
| remove_files = create_list(list_name); |
| |
| sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name); |
| exclude_files = create_list(conffile_name); |
| |
| /* Some directories cant be removed straight away, so do multiple passes */ |
| while (remove_file_array(remove_files, exclude_files)); |
| free_array(exclude_files); |
| free_array(remove_files); |
| |
| /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */ |
| exclude_files = xmalloc(sizeof(char*) * 3); |
| exclude_files[0] = xstrdup(conffile_name); |
| exclude_files[1] = xmalloc(package_name_length + 27); |
| sprintf(exclude_files[1], "/var/lib/dpkg/info/%s.postrm", package_name); |
| exclude_files[2] = NULL; |
| |
| /* Create a list of all /var/lib/dpkg/info/<package> files */ |
| remove_files = all_control_list(package_name); |
| |
| remove_file_array(remove_files, exclude_files); |
| free_array(remove_files); |
| free_array(exclude_files); |
| |
| /* rename <package>.conffile to <package>.list */ |
| rename(conffile_name, list_name); |
| |
| /* Change package status */ |
| set_status(status_num, "deinstall", 1); |
| set_status(status_num, "config-files", 3); |
| } |
| |
| void purge_package(const unsigned int package_num) |
| { |
| const char *package_name = name_hashtable[package_hashtable[package_num]->name]; |
| const unsigned int status_num = search_status_hashtable(package_name); |
| char **remove_files; |
| char **exclude_files; |
| char list_name[strlen(package_name) + 25]; |
| |
| /* run prerm script */ |
| if (run_package_script(package_name, "prerm") != 0) { |
| error_msg_and_die("script failed, prerm failure"); |
| } |
| |
| /* Create a list of files to remove */ |
| sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name); |
| remove_files = create_list(list_name); |
| |
| exclude_files = xmalloc(sizeof(char*)); |
| exclude_files[0] = NULL; |
| |
| /* Some directories cant be removed straight away, so do multiple passes */ |
| while (remove_file_array(remove_files, exclude_files)); |
| free_array(remove_files); |
| |
| /* Create a list of all /var/lib/dpkg/info/<package> files */ |
| remove_files = all_control_list(package_name); |
| remove_file_array(remove_files, exclude_files); |
| free_array(remove_files); |
| free(exclude_files); |
| |
| /* run postrm script */ |
| if (run_package_script(package_name, "postrm") == -1) { |
| error_msg_and_die("postrm fialure.. set status to what?"); |
| } |
| |
| /* Change package status */ |
| set_status(status_num, "purge", 1); |
| set_status(status_num, "not-installed", 3); |
| } |
| |
| static archive_handle_t *init_archive_deb_ar(const char *filename) |
| { |
| archive_handle_t *ar_handle; |
| |
| /* Setup an ar archive handle that refers to the gzip sub archive */ |
| ar_handle = init_handle(); |
| ar_handle->filter = filter_accept_list_reassign; |
| ar_handle->src_fd = xopen(filename, O_RDONLY); |
| |
| return(ar_handle); |
| } |
| |
| static void init_archive_deb_control(archive_handle_t *ar_handle) |
| { |
| archive_handle_t *tar_handle; |
| |
| /* Setup the tar archive handle */ |
| tar_handle = init_handle(); |
| tar_handle->filter = filter_accept_list; |
| tar_handle->src_fd = ar_handle->src_fd; |
| |
| /* We dont care about data.tar.* or debian-binary, just control.tar.* */ |
| #ifdef CONFIG_FEATURE_DEB_TAR_GZ |
| ar_handle->accept = add_to_list(NULL, "control.tar.gz"); |
| #endif |
| #ifdef CONFIG_FEATURE_DEB_TAR_BZ2 |
| ar_handle->accept = add_to_list(ar_handle->accept, "control.tar.bz2"); |
| #endif |
| |
| /* Assign the tar handle as a subarchive of the ar handle */ |
| ar_handle->sub_archive = tar_handle; |
| |
| return; |
| } |
| |
| static void init_archive_deb_data(archive_handle_t *ar_handle) |
| { |
| archive_handle_t *tar_handle; |
| |
| /* Setup the tar archive handle */ |
| tar_handle = init_handle(); |
| tar_handle->filter = filter_accept_all; |
| tar_handle->src_fd = ar_handle->src_fd; |
| |
| /* We dont care about data.tar.* or debian-binary, just control.tar.* */ |
| #ifdef CONFIG_FEATURE_DEB_TAR_GZ |
| tar_handle->accept = add_to_list(NULL, "data.tar.gz"); |
| #endif |
| #ifdef CONFIG_FEATURE_DEB_TAR_BZ2 |
| tar_handle->accept = add_to_list(ar_handle->accept, "data.tar.bz2"); |
| #endif |
| |
| /* Assign the tar handle as a subarchive of the ar handle */ |
| ar_handle->sub_archive = tar_handle; |
| |
| return; |
| } |
| |
| static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, const llist_t *accept) |
| { |
| ar_handle->sub_archive->action_data = data_extract_to_buffer; |
| ar_handle->sub_archive->accept = accept; |
| |
| unpack_ar_archive(ar_handle); |
| close(ar_handle->src_fd); |
| |
| return(ar_handle->sub_archive->buffer); |
| } |
| |
| static void data_extract_all_prefix(archive_handle_t *archive_handle) |
| { |
| char *name_ptr = archive_handle->file_header->name; |
| |
| name_ptr += strspn(name_ptr, "./"); |
| if (name_ptr[0] != '\0') { |
| archive_handle->file_header->name = xmalloc(strlen(archive_handle->buffer) + 2 + strlen(name_ptr)); |
| strcpy(archive_handle->file_header->name, archive_handle->buffer); |
| strcat(archive_handle->file_header->name, name_ptr); |
| data_extract_all(archive_handle); |
| } |
| return; |
| } |
| |
| static void unpack_package(deb_file_t *deb_file) |
| { |
| const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name]; |
| const unsigned int status_num = search_status_hashtable(package_name); |
| const unsigned int status_package_num = status_hashtable[status_num]->package; |
| char *info_prefix; |
| archive_handle_t *archive_handle; |
| FILE *out_stream; |
| |
| /* If existing version, remove it first */ |
| if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) { |
| /* Package is already installed, remove old version first */ |
| printf("Preparing to replace %s %s (using %s) ...\n", package_name, |
| name_hashtable[package_hashtable[status_package_num]->version], |
| deb_file->filename); |
| remove_package(status_package_num); |
| } else { |
| printf("Unpacking %s (from %s) ...\n", package_name, deb_file->filename); |
| } |
| |
| /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */ |
| info_prefix = (char *) xmalloc(strlen(package_name) + 20 + 4 + 2); |
| sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name); |
| archive_handle = init_archive_deb_ar(deb_file->filename); |
| init_archive_deb_control(archive_handle); |
| archive_handle->sub_archive->action_data = data_extract_all_prefix; |
| archive_handle->sub_archive->buffer = info_prefix; |
| unpack_ar_archive(archive_handle); |
| |
| /* Run the preinst prior to extracting */ |
| if (run_package_script(package_name, "preinst") != 0) { |
| /* when preinst returns exit code != 0 then quit installation process */ |
| error_msg_and_die("subprocess pre-installation script returned error."); |
| } |
| |
| /* Extract data.tar.gz to the root directory */ |
| archive_handle = init_archive_deb_ar(deb_file->filename); |
| init_archive_deb_data(archive_handle); |
| unpack_ar_archive(archive_handle); |
| |
| /* Create the list file */ |
| strcat(info_prefix, "list"); |
| out_stream = xfopen(info_prefix, "w"); |
| while (archive_handle->passed) { |
| /* blindly skip over the leading '.' */ |
| fputs(archive_handle->passed->data + 1, out_stream); |
| fputc('\n', out_stream); |
| archive_handle->passed = archive_handle->passed->link; |
| } |
| fclose(out_stream); |
| |
| /* change status */ |
| set_status(status_num, "install", 1); |
| set_status(status_num, "unpacked", 3); |
| |
| free(info_prefix); |
| } |
| |
| void configure_package(deb_file_t *deb_file) |
| { |
| const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name]; |
| const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version]; |
| const int status_num = search_status_hashtable(package_name); |
| |
| printf("Setting up %s (%s)\n", package_name, package_version); |
| |
| /* Run the postinst script */ |
| if (run_package_script(package_name, "postinst") != 0) { |
| /* TODO: handle failure gracefully */ |
| error_msg_and_die("postrm failure.. set status to what?"); |
| } |
| /* Change status to reflect success */ |
| set_status(status_num, "install", 1); |
| set_status(status_num, "installed", 3); |
| } |
| |
| int dpkg_main(int argc, char **argv) |
| { |
| deb_file_t **deb_file = NULL; |
| status_node_t *status_node; |
| int opt; |
| int package_num; |
| int dpkg_opt = 0; |
| int deb_count = 0; |
| int state_status; |
| int status_num; |
| int i; |
| |
| while ((opt = getopt(argc, argv, "CF:ilPru")) != -1) { |
| switch (opt) { |
| case 'C': // equivalent to --configure in official dpkg |
| dpkg_opt |= dpkg_opt_configure; |
| dpkg_opt |= dpkg_opt_package_name; |
| break; |
| case 'F': // equivalent to --force in official dpkg |
| if (strcmp(optarg, "depends") == 0) { |
| dpkg_opt |= dpkg_opt_force_ignore_depends; |
| } |
| case 'i': |
| dpkg_opt |= dpkg_opt_install; |
| dpkg_opt |= dpkg_opt_filename; |
| break; |
| case 'l': |
| dpkg_opt |= dpkg_opt_list_installed; |
| break; |
| case 'P': |
| dpkg_opt |= dpkg_opt_purge; |
| dpkg_opt |= dpkg_opt_package_name; |
| break; |
| case 'r': |
| dpkg_opt |= dpkg_opt_remove; |
| dpkg_opt |= dpkg_opt_package_name; |
| break; |
| case 'u': /* Equivalent to --unpack in official dpkg */ |
| dpkg_opt |= dpkg_opt_unpack; |
| dpkg_opt |= dpkg_opt_filename; |
| break; |
| default: |
| show_usage(); |
| } |
| } |
| /* check for non-otion argument if expected */ |
| if ((dpkg_opt == 0) || ((argc == optind) && !(dpkg_opt && dpkg_opt_list_installed))) { |
| show_usage(); |
| } |
| |
| /* puts("(Reading database ... xxxxx files and directories installed.)"); */ |
| index_status_file("/var/lib/dpkg/status"); |
| |
| /* if the list action was given print the installed packages and exit */ |
| if (dpkg_opt & dpkg_opt_list_installed) { |
| list_packages(); |
| return(EXIT_SUCCESS); |
| } |
| |
| /* Read arguments and store relevant info in structs */ |
| while (optind < argc) { |
| /* deb_count = nb_elem - 1 and we need nb_elem + 1 to allocate terminal node [NULL pointer] */ |
| deb_file = xrealloc(deb_file, sizeof(deb_file_t *) * (deb_count + 2)); |
| deb_file[deb_count] = (deb_file_t *) xmalloc(sizeof(deb_file_t)); |
| if (dpkg_opt & dpkg_opt_filename) { |
| archive_handle_t *archive_handle; |
| const llist_t *control_list = NULL; |
| |
| /* Extract the control file */ |
| control_list = add_to_list(NULL, "./control"); |
| archive_handle = init_archive_deb_ar(argv[optind]); |
| init_archive_deb_control(archive_handle); |
| deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list); |
| if (deb_file[deb_count]->control_file == NULL) { |
| error_msg_and_die("Couldnt extract control file"); |
| } |
| deb_file[deb_count]->filename = xstrdup(argv[optind]); |
| package_num = fill_package_struct(deb_file[deb_count]->control_file); |
| |
| if (package_num == -1) { |
| error_msg("Invalid control file in %s", argv[optind]); |
| continue; |
| } |
| deb_file[deb_count]->package = (unsigned int) package_num; |
| |
| /* Add the package to the status hashtable */ |
| if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_opt_install)) { |
| status_node = (status_node_t *) xmalloc(sizeof(status_node_t)); |
| status_node->package = deb_file[deb_count]->package; |
| /* Try and find a currently installed version of this package */ |
| status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]); |
| /* If no previous entry was found initialise a new entry */ |
| if ((status_hashtable[status_num] == NULL) || |
| (status_hashtable[status_num]->status == 0)) { |
| /* reinstreq isnt changed to "ok" until the package control info |
| * is written to the status file*/ |
| status_node->status = search_name_hashtable("want-install reinstreq not-installed"); |
| status_hashtable[status_num] = status_node; |
| } else { |
| status_hashtable[status_num]->status = search_name_hashtable("want-install reinstreq not-installed"); |
| } |
| } |
| } |
| else if (dpkg_opt & dpkg_opt_package_name) { |
| deb_file[deb_count]->filename = NULL; |
| deb_file[deb_count]->control_file = NULL; |
| deb_file[deb_count]->package = search_package_hashtable( |
| search_name_hashtable(argv[optind]), |
| search_name_hashtable("ANY"), VER_ANY); |
| if (package_hashtable[deb_file[deb_count]->package] == NULL) { |
| error_msg_and_die("Package %s is uninstalled or unknown\n", argv[optind]); |
| } |
| state_status = get_status(search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]), 3); |
| |
| /* check package status is "installed" */ |
| if (dpkg_opt & dpkg_opt_remove) { |
| if ((strcmp(name_hashtable[state_status], "not-installed") == 0) || |
| (strcmp(name_hashtable[state_status], "config-files") == 0)) { |
| error_msg_and_die("%s is already removed.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]); |
| } |
| } |
| else if (dpkg_opt & dpkg_opt_purge) { |
| /* if package status is "conf-files" then its ok */ |
| if (strcmp(name_hashtable[state_status], "not-installed") == 0) { |
| error_msg_and_die("%s is already purged.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]); |
| } |
| } |
| } |
| deb_count++; |
| optind++; |
| } |
| deb_file[deb_count] = NULL; |
| |
| /* Check that the deb file arguments are installable */ |
| /* TODO: check dependencies before removing */ |
| if ((dpkg_opt & dpkg_opt_force_ignore_depends) != dpkg_opt_force_ignore_depends) { |
| if (!check_deps(deb_file, 0, deb_count)) { |
| error_msg_and_die("Dependency check failed"); |
| } |
| } |
| |
| for (i = 0; i < deb_count; i++) { |
| /* Remove or purge packages */ |
| if (dpkg_opt & dpkg_opt_remove) { |
| remove_package(deb_file[i]->package); |
| } |
| else if (dpkg_opt & dpkg_opt_purge) { |
| purge_package(deb_file[i]->package); |
| } |
| else if (dpkg_opt & dpkg_opt_unpack) { |
| unpack_package(deb_file[i]); |
| } |
| else if (dpkg_opt & dpkg_opt_install) { |
| unpack_package(deb_file[i]); |
| configure_package(deb_file[i]); |
| } |
| else if (dpkg_opt & dpkg_opt_configure) { |
| configure_package(deb_file[i]); |
| } |
| } |
| |
| write_status_file(deb_file); |
| |
| for (i = 0; i < deb_count; i++) { |
| free(deb_file[i]->control_file); |
| free(deb_file[i]->filename); |
| free(deb_file[i]); |
| } |
| |
| free(deb_file); |
| |
| for (i = 0; i < NAME_HASH_PRIME; i++) { |
| if (name_hashtable[i] != NULL) { |
| free(name_hashtable[i]); |
| } |
| } |
| |
| for (i = 0; i < PACKAGE_HASH_PRIME; i++) { |
| if (package_hashtable[i] != NULL) { |
| free_package(package_hashtable[i]); |
| } |
| } |
| |
| for (i = 0; i < STATUS_HASH_PRIME; i++) { |
| if (status_hashtable[i] != NULL) { |
| free(status_hashtable[i]); |
| } |
| } |
| |
| return(EXIT_SUCCESS); |
| } |
| |