| index : pacman | |
| Archlinux32 fork of pacman | gitolite user |
| summaryrefslogtreecommitdiff |
| -rw-r--r-- | lib/libalpm/be_package.c | 171 |
diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c index ff266ae8..df5b28d1 100644 --- a/lib/libalpm/be_package.c +++ b/lib/libalpm/be_package.c @@ -26,6 +26,7 @@ #include <limits.h> #include <ctype.h> #include <locale.h> /* setlocale */ +#include <errno.h> /* libarchive */ #include <archive.h> @@ -39,6 +40,113 @@ #include "deps.h" /* _alpm_splitdep */ /** + * Open a package changelog for reading. Similar to fopen in functionality, + * except that the returned 'file stream' is from an archive. + * @param pkg the package (file) to read the changelog + * @return a 'file stream' to the package changelog + */ +void *_package_changelog_open(pmpkg_t *pkg) +{ + ALPM_LOG_FUNC; + + ASSERT(pkg != NULL, return(NULL)); + + struct archive *archive = NULL; + struct archive_entry *entry; + const char *pkgfile = pkg->origin_data.file; + + if((archive = archive_read_new()) == NULL) { + RET_ERR(PM_ERR_LIBARCHIVE, NULL); + } + + archive_read_support_compression_all(archive); + archive_read_support_format_all(archive); + + if (archive_read_open_filename(archive, pkgfile, + ARCHIVE_DEFAULT_BYTES_PER_BLOCK) != ARCHIVE_OK) { + RET_ERR(PM_ERR_PKG_OPEN, NULL); + } + + while(archive_read_next_header(archive, &entry) == ARCHIVE_OK) { + const char *entry_name = archive_entry_pathname(entry); + + if(strcmp(entry_name, ".CHANGELOG") == 0) { + return(archive); + } + } + /* we didn't find a changelog */ + archive_read_finish(archive); + errno = ENOENT; + + return(NULL); +} + +/** + * Read data from an open changelog 'file stream'. Similar to fread in + * functionality, this function takes a buffer and amount of data to read. + * @param ptr a buffer to fill with raw changelog data + * @param size the size of the buffer + * @param pkg the package that the changelog is being read from + * @param fp a 'file stream' to the package changelog + * @return the number of characters read, or 0 if there is no more data + */ +size_t _package_changelog_read(void *ptr, size_t size, + const pmpkg_t *pkg, const void *fp) +{ + ssize_t sret = archive_read_data((struct archive*)fp, ptr, size); + /* Report error (negative values) */ + if(sret < 0) { + pm_errno = PM_ERR_LIBARCHIVE; + return(0); + } else { + return((size_t)sret); + } +} + +/* +int _package_changelog_feof(const pmpkg_t *pkg, void *fp) +{ + // note: this doesn't quite work, no feof in libarchive + return( archive_read_data((struct archive*)fp, NULL, 0) ); +} +*/ + +/** + * Close a package changelog for reading. Similar to fclose in functionality, + * except that the 'file stream' is from an archive. + * @param pkg the package (file) that the changelog was read from + * @param fp a 'file stream' to the package changelog + * @return whether closing the package changelog stream was successful + */ +int _package_changelog_close(const pmpkg_t *pkg, void *fp) +{ + return( archive_read_finish((struct archive *)fp) ); +} + + +/** Package file operations struct accessor. We implement this as a method + * rather than a static struct as in be_files because we want to reuse the + * majority of the default_pkg_ops struct and add only a few operations of + * our own on top. The static file_pkg_ops variable inside this function + * lets us only initialize an operations struct once which can always be + * accessed by this method. + */ +static struct pkg_operations *get_file_pkg_ops(void) +{ + static struct pkg_operations *file_pkg_ops = NULL; + /* determine whether our static file_pkg_ops struct has been initialized */ + if(!file_pkg_ops) { + MALLOC(file_pkg_ops, sizeof(struct pkg_operations), + RET_ERR(PM_ERR_MEMORY, NULL)); + memcpy(file_pkg_ops, &default_pkg_ops, sizeof(struct pkg_operations)); + file_pkg_ops->changelog_open = _package_changelog_open; + file_pkg_ops->changelog_read = _package_changelog_read; + file_pkg_ops->changelog_close = _package_changelog_close; + } + return(file_pkg_ops); +} + +/** * Parses the package description file for a package into a pmpkg_t struct. * @param archive the archive to read from, pointed at the .PKGINFO entry * @param newpkg an empty pmpkg_t struct to fill with package info @@ -47,17 +155,22 @@ */ static int parse_descfile(struct archive *a, pmpkg_t *newpkg) { - char line[PATH_MAX]; char *ptr = NULL; char *key = NULL; int linenum = 0; + struct archive_read_buffer buf; ALPM_LOG_FUNC; - /* loop until we reach EOF (where archive_fgets will return NULL) */ - while(_alpm_archive_fgets(line, PATH_MAX, a) != NULL) { + memset(&buf, 0, sizeof(buf)); + /* 512K for a line length seems reasonable */ + buf.max_line_size = 512 * 1024; + + /* loop until we reach EOF or other error */ + while(_alpm_archive_fgets(a, &buf) == ARCHIVE_OK) { + char *line = _alpm_strtrim(buf.line); + linenum++; - _alpm_strtrim(line); if(strlen(line) == 0 || line[0] == '#') { continue; } @@ -69,21 +182,27 @@ static int parse_descfile(struct archive *a, pmpkg_t *newpkg) } else { key = _alpm_strtrim(key); ptr = _alpm_strtrim(ptr); - if(!strcmp(key, "pkgname")) { + if(strcmp(key, "pkgname") == 0) { STRDUP(newpkg->name, ptr, RET_ERR(PM_ERR_MEMORY, -1)); - } else if(!strcmp(key, "pkgver")) { + newpkg->name_hash = _alpm_hash_sdbm(newpkg->name); + } else if(strcmp(key, "pkgver") == 0) { STRDUP(newpkg->version, ptr, RET_ERR(PM_ERR_MEMORY, -1)); - } else if(!strcmp(key, "pkgdesc")) { + } else if(strcmp(key, "pkgdesc") == 0) { STRDUP(newpkg->desc, ptr, RET_ERR(PM_ERR_MEMORY, -1)); - } else if(!strcmp(key, "force")) { - newpkg->force = 1; - } else if(!strcmp(key, "group")) { + } else if(strcmp(key, "force") == 0) { + /* For backward compatibility, like in sync_db_read */ + if(!newpkg->epoch) { + newpkg->epoch = 1; + } + } else if(strcmp(key, "epoch") == 0) { + newpkg->epoch = atoi(ptr); + } else if(strcmp(key, "group") == 0) { newpkg->groups = alpm_list_add(newpkg->groups, strdup(ptr)); - } else if(!strcmp(key, "url")) { + } else if(strcmp(key, "url") == 0) { STRDUP(newpkg->url, ptr, RET_ERR(PM_ERR_MEMORY, -1)); - } else if(!strcmp(key, "license")) { + } else if(strcmp(key, "license") == 0) { newpkg->licenses = alpm_list_add(newpkg->licenses, strdup(ptr)); - } else if(!strcmp(key, "builddate")) { + } else if(strcmp(key, "builddate") == 0) { char first = tolower((unsigned char)ptr[0]); if(first > 'a' && first < 'z') { struct tm tmp_tm = {0}; /* initialize to null in case of failure */ @@ -94,27 +213,27 @@ static int parse_descfile(struct archive *a, pmpkg_t *newpkg) } else { newpkg->builddate = atol(ptr); } - } else if(!strcmp(key, "packager")) { + } else if(strcmp(key, "packager") == 0) { STRDUP(newpkg->packager, ptr, RET_ERR(PM_ERR_MEMORY, -1)); - } else if(!strcmp(key, "arch")) { + } else if(strcmp(key, "arch") == 0) { STRDUP(newpkg->arch, ptr, RET_ERR(PM_ERR_MEMORY, -1)); - } else if(!strcmp(key, "size")) { + } else if(strcmp(key, "size") == 0) { /* size in the raw package is uncompressed (installed) size */ newpkg->isize = atol(ptr); - } else if(!strcmp(key, "depend")) { + } else if(strcmp(key, "depend") == 0) { pmdepend_t *dep = _alpm_splitdep(ptr); newpkg->depends = alpm_list_add(newpkg->depends, dep); - } else if(!strcmp(key, "optdepend")) { + } else if(strcmp(key, "optdepend") == 0) { newpkg->optdepends = alpm_list_add(newpkg->optdepends, strdup(ptr)); - } else if(!strcmp(key, "conflict")) { + } else if(strcmp(key, "conflict") == 0) { newpkg->conflicts = alpm_list_add(newpkg->conflicts, strdup(ptr)); - } else if(!strcmp(key, "replaces")) { + } else if(strcmp(key, "replaces") == 0) { newpkg->replaces = alpm_list_add(newpkg->replaces, strdup(ptr)); - } else if(!strcmp(key, "provides")) { + } else if(strcmp(key, "provides") == 0) { newpkg->provides = alpm_list_add(newpkg->provides, strdup(ptr)); - } else if(!strcmp(key, "backup")) { + } else if(strcmp(key, "backup") == 0) { newpkg->backup = alpm_list_add(newpkg->backup, strdup(ptr)); - } else if(!strcmp(key, "makepkgopt")) { + } else if(strcmp(key, "makepkgopt") == 0) { /* not used atm */ } else { _alpm_log(PM_LOG_DEBUG, "%s: syntax error in description file line %d\n", @@ -232,11 +351,13 @@ static pmpkg_t *pkg_load(const char *pkgfile, int full) goto pkg_invalid; } - archive_read_finish(archive); + archive_read_finish(archive); /* internal fields for package struct */ newpkg->origin = PKG_FROM_FILE; + /* TODO eventually kill/move this? */ newpkg->origin_data.file = strdup(pkgfile); + newpkg->ops = get_file_pkg_ops(); if(full) { /* "checking for conflicts" requires a sorted list, ensure that here */ @@ -247,7 +368,7 @@ static pmpkg_t *pkg_load(const char *pkgfile, int full) } else { /* get rid of any partial filelist we may have collected, it is invalid */ FREELIST(newpkg->files); - newpkg->infolevel = INFRQ_BASE | INFRQ_DESC | INFRQ_DEPENDS; + newpkg->infolevel = INFRQ_BASE | INFRQ_DESC; } return(newpkg); |