1 /* pkg_parse.c - the opkg package management system
3 Copyright (C) 2009 Ubiq Technologies <graham.gower@gmail.com>
6 Copyright (C) 2002 Compaq Computer Corporation
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
25 #include "opkg_utils.h"
26 #include "pkg_parse.h"
27 #include "libbb/libbb.h"
30 is_field(const char *type, const char *line)
32 if (!strncmp(line, type, strlen(type)))
38 parse_simple(const char *type, const char *line)
40 return trim_xstrdup(line + strlen(type) + 1);
44 * Parse a comma separated string into an array.
47 parse_comma_separated(const char *raw, unsigned int *count)
49 char **depends = NULL;
50 const char *start, *end;
53 /* skip past the "Field:" marker */
54 while (*raw && *raw != ':')
58 if (line_is_blank(raw)) {
64 depends = xrealloc(depends, sizeof(char *) * (line_count + 1));
70 while (*raw != ',' && *raw)
74 while (end > start && isspace(*end))
77 depends[line_count] = xstrndup(start, end-start);
89 parse_status(pkg_t *pkg, const char *sstr)
91 char sw_str[64], sf_str[64], ss_str[64];
93 if (sscanf(sstr, "Status: %63s %63s %63s",
94 sw_str, sf_str, ss_str) != 3) {
95 opkg_msg(ERROR, "Failed to parse Status line for %s\n",
100 pkg->state_want = pkg_state_want_from_str(sw_str);
101 pkg->state_flag = pkg_state_flag_from_str(sf_str);
102 pkg->state_status = pkg_state_status_from_str(ss_str);
106 parse_conffiles(pkg_t *pkg, const char *cstr)
108 char file_name[1024], md5sum[35];
110 if (sscanf(cstr, "%1023s %34s", file_name, md5sum) != 2) {
111 opkg_msg(ERROR, "Failed to parse Conffiles line for %s\n",
116 conffile_list_append(&pkg->conffiles, file_name, md5sum);
120 parse_version(pkg_t *pkg, const char *vstr)
124 if (strncmp(vstr, "Version:", 8) == 0)
127 while (*vstr && isspace(*vstr))
130 colon = strchr(vstr, ':');
133 pkg->epoch = strtoul(vstr, NULL, 10);
135 opkg_perror(ERROR, "%s: invalid epoch", pkg->name);
142 pkg->version= xstrdup(vstr);
143 pkg->revision = strrchr(pkg->version,'-');
146 *pkg->revision++ = '\0';
152 pkg_parse_line(pkg_t *pkg, const char *line, uint mask)
154 /* these flags are a bit hackish... */
155 static int reading_conffiles = 0, reading_description = 0;
158 /* Exclude globally masked fields. */
161 /* Flip the semantics of the mask. */
166 if ((mask & PFM_ARCHITECTURE ) && is_field("Architecture", line))
167 pkg->architecture = parse_simple("Architecture", line);
168 else if ((mask & PFM_AUTO_INSTALLED) && is_field("Auto-Installed", line)) {
169 char *tmp = parse_simple("Auto-Installed", line);
170 if (strcmp(tmp, "yes") == 0)
171 pkg->auto_installed = 1;
177 if ((mask & PFM_CONFFILES) && is_field("Conffiles", line)) {
178 reading_conffiles = 1;
179 reading_description = 0;
180 goto dont_reset_flags;
182 else if ((mask & PFM_CONFLICTS) && is_field("Conflicts", line))
183 pkg->conflicts_str = parse_comma_separated(line, &pkg->conflicts_count);
187 if ((mask & PFM_DESCRIPTION) && is_field("Description", line)) {
188 pkg->description = parse_simple("Description", line);
189 reading_conffiles = 0;
190 reading_description = 1;
191 goto dont_reset_flags;
192 } else if ((mask & PFM_DEPENDS) && is_field("Depends", line))
193 pkg->depends_str = parse_comma_separated(line, &pkg->depends_count);
197 if((mask & PFM_ESSENTIAL) && is_field("Essential", line)) {
198 char *tmp = parse_simple("Essential", line);
199 if (strcmp(tmp, "yes") == 0)
206 if((mask & PFM_FILENAME) && is_field("Filename", line))
207 pkg->filename = parse_simple("Filename", line);
211 if ((mask && PFM_INSTALLED_SIZE) && is_field("Installed-Size", line)) {
212 char *tmp = parse_simple("Installed-Size", line);
213 pkg->installed_size = strtoul(tmp, NULL, 0);
215 } else if ((mask && PFM_INSTALLED_TIME) && is_field("Installed-Time", line)) {
216 char *tmp = parse_simple("Installed-Time", line);
217 pkg->installed_time = strtoul(tmp, NULL, 0);
223 if (mask && PFM_MD5SUM) {
224 if (is_field("MD5sum:", line))
225 pkg->md5sum = parse_simple("MD5sum", line);
226 /* The old opkg wrote out status files with the wrong
227 * case for MD5sum, let's parse it either way */
228 else if (is_field("MD5Sum:", line))
229 pkg->md5sum = parse_simple("MD5Sum", line);
230 } else if((mask & PFM_MAINTAINER) && is_field("Maintainer", line))
231 pkg->maintainer = parse_simple("Maintainer", line);
235 if ((mask & PFM_PACKAGE) && is_field("Package", line))
236 pkg->name = parse_simple("Package", line);
237 else if ((mask & PFM_PRIORITY) && is_field("Priority", line))
238 pkg->priority = parse_simple("Priority", line);
239 else if ((mask & PFM_PROVIDES) && is_field("Provides", line))
240 pkg->provides_str = parse_comma_separated(line, &pkg->provides_count);
241 else if ((mask & PFM_PRE_DEPENDS) && is_field("Pre-Depends", line))
242 pkg->pre_depends_str = parse_comma_separated(line, &pkg->pre_depends_count);
246 if ((mask & PFM_RECOMMENDS) && is_field("Recommends", line))
247 pkg->recommends_str = parse_comma_separated(line, &pkg->recommends_count);
248 else if ((mask & PFM_REPLACES) && is_field("Replaces", line))
249 pkg->replaces_str = parse_comma_separated(line, &pkg->replaces_count);
254 if ((mask & PFM_SECTION) && is_field("Section", line))
255 pkg->section = parse_simple("Section", line);
257 else if ((mask & PFM_SHA256SUM) && is_field("SHA256sum", line))
258 pkg->sha256sum = parse_simple("SHA256sum", line);
260 else if ((mask & PFM_SIZE) && is_field("Size", line)) {
261 char *tmp = parse_simple("Size", line);
262 pkg->size = strtoul(tmp, NULL, 0);
264 } else if ((mask & PFM_SOURCE) && is_field("Source", line))
265 pkg->source = parse_simple("Source", line);
266 else if ((mask & PFM_STATUS) && is_field("Status", line))
267 parse_status(pkg, line);
268 else if ((mask & PFM_SUGGESTS) && is_field("Suggests", line))
269 pkg->suggests_str = parse_comma_separated(line, &pkg->suggests_count);
273 if ((mask & PFM_TAGS) && is_field("Tags", line))
274 pkg->tags = parse_simple("Tags", line);
278 if ((mask & PFM_VERSION) && is_field("Version", line))
279 parse_version(pkg, line);
283 if ((mask & PFM_DESCRIPTION) && reading_description) {
284 pkg->description = xrealloc(pkg->description,
285 strlen(pkg->description)
286 + 1 + strlen(line) + 1);
287 strcat(pkg->description, "\n");
288 strcat(pkg->description, (line));
289 goto dont_reset_flags;
290 } else if ((mask && PFM_CONFFILES) && reading_conffiles) {
291 parse_conffiles(pkg, line);
292 goto dont_reset_flags;
297 /* For package lists, signifies end of package. */
298 if(line_is_blank(line)) {
304 reading_description = 0;
305 reading_conffiles = 0;
313 pkg_parse_from_stream_nomalloc(pkg_t *pkg, FILE *fp, uint mask,
314 char **buf0, size_t buf0len)
328 if (fgets(buf, (int)buflen, fp) == NULL) {
330 opkg_perror(ERROR, "fgets");
332 } else if (strlen(*buf0) == buf0len-1) {
333 opkg_msg(ERROR, "Missing new line character"
334 " at end of file!\n");
335 pkg_parse_line(pkg, *buf0, mask);
340 nl = strchr(buf, '\n');
342 if (strlen(buf) < buflen-1) {
344 * Line could be exactly buflen-1 long and
345 * missing a newline, but we won't know until
346 * fgets fails to read more data.
348 opkg_msg(ERROR, "Missing new line character"
349 " at end of file!\n");
350 pkg_parse_line(pkg, *buf0, mask);
353 if (buf0len >= EXCESSIVE_LINE_LEN) {
354 opkg_msg(ERROR, "Excessively long line at "
355 "%d. Corrupt file?\n",
362 * Realloc and point buf past the data already read,
363 * at the NULL terminator inserted by fgets.
364 * |<--------------- buf0len ----------------->|
365 * | |<------- buflen ---->|
366 * |---------------------|---------------------|
371 *buf0 = xrealloc(*buf0, buf0len);
372 buf = *buf0 + buflen -2;
381 if (pkg_parse_line(pkg, *buf0, mask))
389 if (pkg->name == NULL) {
390 /* probably just a blank line */
398 pkg_parse_from_stream(pkg_t *pkg, FILE *fp, uint mask)
402 const size_t len = 4096;
405 ret = pkg_parse_from_stream_nomalloc(pkg, fp, mask, &buf, len);