This adds a mechanism for package builders to add arbitrary data to packages that is not necessarily relevant enough to the package installation process to gain first-class support in alpm. Currently these fields have to be added to parsers with a "not actually used" comment and can't be retrieved through the API. Extended data is stored in "name=value" format in the xdata field (%XDATA% in desc files): xdata = pkgtype=debug or %XDATA% pkgtype=debug Signed-off-by: Andrew Gregory <andrew.gregory.8@gmail.com> --- lib/libalpm/alpm.h | 7 +++++++ lib/libalpm/be_local.c | 28 ++++++++++++++++++++++++++++ lib/libalpm/be_package.c | 6 ++++++ lib/libalpm/be_sync.c | 12 ++++++++++++ lib/libalpm/package.c | 35 +++++++++++++++++++++++++++++++++++ lib/libalpm/package.h | 7 +++++++ 6 files changed, 95 insertions(+) diff --git a/lib/libalpm/alpm.h b/lib/libalpm/alpm.h index cdf71fdc9..3304ae77a 100644 --- a/lib/libalpm/alpm.h +++ b/lib/libalpm/alpm.h @@ -2291,6 +2291,13 @@ typedef enum _alpm_pkgvalidation_t { ALPM_PKG_VALIDATION_SIGNATURE = (1 << 3) } alpm_pkgvalidation_t; +typedef struct _alpm_pkg_xdata_t { + char *name; + char *value; +} alpm_pkg_xdata_t; + +alpm_list_t *alpm_pkg_get_xdata(alpm_pkg_t *pkg); + /** Create a package from a file. * If full is false, the archive is read only until all necessary * metadata is found. If it is true, the entire archive is read, which diff --git a/lib/libalpm/be_local.c b/lib/libalpm/be_local.c index 87fecbe52..e117b69df 100644 --- a/lib/libalpm/be_local.c +++ b/lib/libalpm/be_local.c @@ -195,6 +195,12 @@ static alpm_list_t *_cache_get_backup(alpm_pkg_t *pkg) return pkg->backup; } +static alpm_list_t *_cache_get_xdata(alpm_pkg_t *pkg) +{ + LAZY_LOAD(INFRQ_DESC); + return pkg->xdata; +} + /** * Open a package changelog for reading. Similar to fopen in functionality, * except that the returned 'file stream' is from the database. @@ -349,6 +355,7 @@ static const struct pkg_operations local_pkg_ops = { .get_replaces = _cache_get_replaces, .get_files = _cache_get_files, .get_backup = _cache_get_backup, + .get_xdata = _cache_get_xdata, .changelog_open = _cache_changelog_open, .changelog_read = _cache_changelog_read, @@ -804,6 +811,18 @@ static int local_db_read(alpm_pkg_t *info, int inforeq) READ_AND_SPLITDEP(info->conflicts); } else if(strcmp(line, "%PROVIDES%") == 0) { READ_AND_SPLITDEP(info->provides); + } else if(strcmp(line, "%XDATA%") == 0) { + alpm_list_t *i, *lines = NULL; + READ_AND_STORE_ALL(lines); + for(i = lines; i; i = i->next) { + alpm_pkg_xdata_t *pd = _alpm_pkg_parse_xdata(i->data); + if(pd == NULL || !alpm_list_append(&info->xdata, pd)) { + _alpm_pkg_xdata_free(pd); + FREELIST(lines); + goto error; + } + } + FREELIST(lines); } } fclose(fp); @@ -1040,6 +1059,15 @@ int _alpm_local_db_write(alpm_db_t *db, alpm_pkg_t *info, int inforeq) write_deps(fp, "%CONFLICTS%", info->conflicts); write_deps(fp, "%PROVIDES%", info->provides); + if(info->xdata) { + fputs("%XDATA%\n", fp); + for(lp = info->xdata; lp; lp = lp->next) { + alpm_pkg_xdata_t *pd = lp->data; + fprintf(fp, "%s=%s\n", pd->name, pd->value); + } + fputc('\n', fp); + } + fclose(fp); fp = NULL; } diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c index 203c98c13..b4f3f1c26 100644 --- a/lib/libalpm/be_package.c +++ b/lib/libalpm/be_package.c @@ -246,6 +246,12 @@ static int parse_descfile(alpm_handle_t *handle, struct archive *a, alpm_pkg_t * newpkg->backup = alpm_list_add(newpkg->backup, backup); } else if(strcmp(key, "pkgtype") == 0) { /* not used atm */ + } else if(strcmp(key, "xdata") == 0) { + alpm_pkg_xdata_t *pd = _alpm_pkg_parse_xdata(ptr); + if(pd == NULL || !alpm_list_append(&newpkg->xdata, pd)) { + _alpm_pkg_xdata_free(pd); + return -1; + } } else { _alpm_log(handle, ALPM_LOG_DEBUG, "%s: unknown key '%s' in description file line %d\n", newpkg->name ? newpkg->name : "error", key, linenum); diff --git a/lib/libalpm/be_sync.c b/lib/libalpm/be_sync.c index 8c8e01a0c..81676be96 100644 --- a/lib/libalpm/be_sync.c +++ b/lib/libalpm/be_sync.c @@ -666,6 +666,18 @@ static int sync_db_read(alpm_db_t *db, struct archive *archive, pkg->files.count = files_count; pkg->files.files = files; _alpm_filelist_sort(&pkg->files); + } else if(strcmp(line, "%DATA%") == 0) { + alpm_list_t *i, *lines = NULL; + READ_AND_STORE_ALL(lines); + for(i = lines; i; i = i->next) { + alpm_pkg_xdata_t *pd = _alpm_pkg_parse_xdata(i->data); + if(pd == NULL || !alpm_list_append(&pkg->xdata, pd)) { + _alpm_pkg_xdata_free(pd); + FREELIST(lines); + goto error; + } + } + FREELIST(lines); } } if(ret != ARCHIVE_EOF) { diff --git a/lib/libalpm/package.c b/lib/libalpm/package.c index 4d89dcd8a..8c95dab3e 100644 --- a/lib/libalpm/package.c +++ b/lib/libalpm/package.c @@ -98,6 +98,7 @@ static alpm_list_t *_pkg_get_provides(alpm_pkg_t *pkg) { return pkg->provides; static alpm_list_t *_pkg_get_replaces(alpm_pkg_t *pkg) { return pkg->replaces; } static alpm_filelist_t *_pkg_get_files(alpm_pkg_t *pkg) { return &(pkg->files); } static alpm_list_t *_pkg_get_backup(alpm_pkg_t *pkg) { return pkg->backup; } +static alpm_list_t *_pkg_get_xdata(alpm_pkg_t *pkg) { return pkg->xdata; } static void *_pkg_changelog_open(alpm_pkg_t UNUSED *pkg) { @@ -162,6 +163,7 @@ const struct pkg_operations default_pkg_ops = { .get_replaces = _pkg_get_replaces, .get_files = _pkg_get_files, .get_backup = _pkg_get_backup, + .get_xdata = _pkg_get_xdata, .changelog_open = _pkg_changelog_open, .changelog_read = _pkg_changelog_read, @@ -485,6 +487,13 @@ int SYMEXPORT alpm_pkg_has_scriptlet(alpm_pkg_t *pkg) return pkg->ops->has_scriptlet(pkg); } +alpm_list_t SYMEXPORT *alpm_pkg_get_xdata(alpm_pkg_t *pkg) +{ + ASSERT(pkg != NULL, return NULL); + pkg->handle->pm_errno = ALPM_ERR_OK; + return pkg->ops->get_xdata(pkg); +} + static void find_requiredby(alpm_pkg_t *pkg, alpm_db_t *db, alpm_list_t **reqs, int optional) { @@ -677,6 +686,30 @@ static void free_deplist(alpm_list_t *deps) alpm_list_free(deps); } +alpm_pkg_xdata_t *_alpm_pkg_parse_xdata(const char *string) +{ + alpm_pkg_xdata_t *pd; + const char *sep; + if(string == NULL || (sep = strchr(string, '=')) == NULL) { + return NULL; + } + + CALLOC(pd, 1, sizeof(alpm_pkg_xdata_t), return NULL); + STRNDUP(pd->name, string, sep - string, FREE(pd); return NULL); + STRDUP(pd->value, sep + 1, FREE(pd->name); FREE(pd); return NULL); + + return pd; +} + +void _alpm_pkg_xdata_free(alpm_pkg_xdata_t *pd) +{ + if(pd) { + free(pd->name); + free(pd->value); + free(pd); + } +} + void _alpm_pkg_free(alpm_pkg_t *pkg) { if(pkg == NULL) { @@ -707,6 +740,8 @@ void _alpm_pkg_free(alpm_pkg_t *pkg) } alpm_list_free_inner(pkg->backup, (alpm_list_fn_free)_alpm_backup_free); alpm_list_free(pkg->backup); + alpm_list_free_inner(pkg->xdata, (alpm_list_fn_free)_alpm_pkg_xdata_free); + alpm_list_free(pkg->xdata); free_deplist(pkg->depends); free_deplist(pkg->optdepends); free_deplist(pkg->checkdepends); diff --git a/lib/libalpm/package.h b/lib/libalpm/package.h index 935225300..5ebe6bd12 100644 --- a/lib/libalpm/package.h +++ b/lib/libalpm/package.h @@ -67,6 +67,8 @@ struct pkg_operations { alpm_filelist_t *(*get_files) (alpm_pkg_t *); alpm_list_t *(*get_backup) (alpm_pkg_t *); + alpm_list_t *(*get_xdata) (alpm_pkg_t *); + void *(*changelog_open) (alpm_pkg_t *); size_t (*changelog_read) (void *, size_t, const alpm_pkg_t *, void *); int (*changelog_close) (const alpm_pkg_t *, void *); @@ -136,6 +138,8 @@ struct _alpm_pkg_t { alpm_pkgreason_t reason; int scriptlet; + alpm_list_t *xdata; + /* Bitfield from alpm_dbinfrq_t */ int infolevel; /* Bitfield from alpm_pkgvalidation_t */ @@ -158,4 +162,7 @@ alpm_pkg_t *_alpm_pkg_load_internal(alpm_handle_t *handle, int _alpm_pkg_cmp(const void *p1, const void *p2); int _alpm_pkg_compare_versions(alpm_pkg_t *local_pkg, alpm_pkg_t *pkg); +alpm_pkg_xdata_t *_alpm_pkg_parse_xdata(const char *string); +void _alpm_pkg_xdata_free(alpm_pkg_xdata_t *pd); + #endif /* ALPM_PACKAGE_H */ -- 2.35.1