1 files changed, 64 insertions, 49 deletions

diff --git a/lib/libalpm/be_package.c b/lib/libalpm/be_package.c
index 4d9d0e82..c602996d 100644
--- a/lib/libalpm/be_package.c
+++ b/lib/libalpm/be_package.c
@@ -18,11 +18,12 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "config.h"
-
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
 
 /* libarchive */
 #include <archive.h>
@@ -37,6 +38,11 @@
 #include "package.h"
 #include "deps.h" /* _alpm_splitdep */
 
+struct package_changelog {
+	struct archive *archive;
+	int fd;
+};
+
 /**
  * Open a package changelog for reading. Similar to fopen in functionality,
  * except that the returned 'file stream' is from an archive.
@@ -47,31 +53,38 @@ static void *_package_changelog_open(alpm_pkg_t *pkg)
 {
 	ASSERT(pkg != NULL, return NULL);
 
-	struct archive *archive = NULL;
+	struct package_changelog *changelog;
+	struct archive *archive;
 	struct archive_entry *entry;
 	const char *pkgfile = pkg->origin_data.file;
+	struct stat buf;
+	int fd;
 
-	if((archive = archive_read_new()) == NULL) {
-		RET_ERR(pkg->handle, ALPM_ERR_LIBARCHIVE, NULL);
-	}
-
-	archive_read_support_compression_all(archive);
-	archive_read_support_format_all(archive);
-
-	if(archive_read_open_filename(archive, pkgfile,
-				ALPM_BUFFER_SIZE) != ARCHIVE_OK) {
-		RET_ERR(pkg->handle, ALPM_ERR_PKG_OPEN, NULL);
+	fd = _alpm_open_archive(pkg->handle, pkgfile, &buf,
+			&archive, ALPM_ERR_PKG_OPEN);
+	if(fd < 0) {
+		return 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;
+			changelog = malloc(sizeof(struct package_changelog));
+			if(!changelog) {
+				pkg->handle->pm_errno = ALPM_ERR_MEMORY;
+				archive_read_finish(archive);
+				CLOSE(fd);
+				return NULL;
+			}
+			changelog->archive = archive;
+			changelog->fd = fd;
+			return changelog;
 		}
 	}
 	/* we didn't find a changelog */
 	archive_read_finish(archive);
+	CLOSE(fd);
 	errno = ENOENT;
 
 	return NULL;
@@ -89,7 +102,8 @@ static void *_package_changelog_open(alpm_pkg_t *pkg)
 static size_t _package_changelog_read(void *ptr, size_t size,
 		const alpm_pkg_t UNUSED *pkg, void *fp)
 {
-	ssize_t sret = archive_read_data((struct archive *)fp, ptr, size);
+	struct package_changelog *changelog = fp;
+	ssize_t sret = archive_read_data(changelog->archive, ptr, size);
 	/* Report error (negative values) */
 	if(sret < 0) {
 		RET_ERR(pkg->handle, ALPM_ERR_LIBARCHIVE, 0);
@@ -107,7 +121,12 @@ static size_t _package_changelog_read(void *ptr, size_t size,
  */
 static int _package_changelog_close(const alpm_pkg_t UNUSED *pkg, void *fp)
 {
-	return archive_read_finish((struct archive *)fp);
+	int ret;
+	struct package_changelog *changelog = fp;
+	ret = archive_read_finish(changelog->archive);
+	CLOSE(changelog->fd);
+	free(changelog);
+	return ret;
 }
 
 /** Package file operations struct accessor. We implement this as a method
@@ -152,18 +171,21 @@ static int parse_descfile(alpm_handle_t *handle, struct archive *a, alpm_pkg_t *
 		size_t len = _alpm_strip_newline(buf.line);
 
 		linenum++;
-		if(len == 0 || buf.line[0] == '#') {
+		key = buf.line;
+		if(len == 0 || key[0] == '#') {
 			continue;
 		}
-		ptr = buf.line;
-		key = strsep(&ptr, "=");
-		if(key == NULL || ptr == NULL) {
-			_alpm_log(handle, ALPM_LOG_DEBUG, "%s: syntax error in description file line %d\n",
-								newpkg->name ? newpkg->name : "error", linenum);
+		/* line is always in this format: "key = value"
+		 * we can be sure the " = " exists, so look for that */
+		ptr = memchr(key, ' ', len);
+		if(!ptr || ptr - key + 2 > len || memcmp(ptr, " = ", 3) != 0) {
+			_alpm_log(handle, ALPM_LOG_DEBUG,
+					"%s: syntax error in description file line %d\n",
+					newpkg->name ? newpkg->name : "error", linenum);
 		} else {
-			key = _alpm_strtrim(key);
-			while(*ptr == ' ') ptr++;
-			ptr = _alpm_strtrim(ptr);
+			/* NULL the end of the key portion, move ptr to start of value */
+			*ptr = '\0';
+			ptr += 3;
 			if(strcmp(key, "pkgname") == 0) {
 				STRDUP(newpkg->name, ptr, return -1);
 				newpkg->name_hash = _alpm_hash_sdbm(newpkg->name);
@@ -355,7 +377,7 @@ int _alpm_pkg_validate_internal(alpm_handle_t *handle,
 alpm_pkg_t *_alpm_pkg_load_internal(alpm_handle_t *handle,
 		const char *pkgfile, int full)
 {
-	int ret, config = 0;
+	int ret, fd, config = 0;
 	struct archive *archive;
 	struct archive_entry *entry;
 	alpm_pkg_t *newpkg = NULL;
@@ -367,33 +389,22 @@ alpm_pkg_t *_alpm_pkg_load_internal(alpm_handle_t *handle,
 		RET_ERR(handle, ALPM_ERR_WRONG_ARGS, NULL);
 	}
 
-	/* attempt to stat the package file, ensure it exists */
-	if(stat(pkgfile, &st) == 0) {
-		newpkg = _alpm_pkg_new();
-		if(newpkg == NULL) {
-			RET_ERR(handle, ALPM_ERR_MEMORY, NULL);
+	fd = _alpm_open_archive(handle, pkgfile, &st, &archive, ALPM_ERR_PKG_OPEN);
+	if(fd < 0) {
+		if(errno == ENOENT) {
+			handle->pm_errno = ALPM_ERR_PKG_NOT_FOUND;
 		}
-		newpkg->filename = strdup(pkgfile);
-		newpkg->size = st.st_size;
-	} else {
-		/* couldn't stat the pkgfile, return an error */
-		RET_ERR(handle, ALPM_ERR_PKG_NOT_FOUND, NULL);
-	}
-
-	/* try to create an archive object to read in the package */
-	if((archive = archive_read_new()) == NULL) {
-		alpm_pkg_free(newpkg);
-		RET_ERR(handle, ALPM_ERR_LIBARCHIVE, NULL);
+		goto error;
 	}
 
-	archive_read_support_compression_all(archive);
-	archive_read_support_format_all(archive);
-
-	if(archive_read_open_filename(archive, pkgfile,
-				ALPM_BUFFER_SIZE) != ARCHIVE_OK) {
-		alpm_pkg_free(newpkg);
-		RET_ERR(handle, ALPM_ERR_PKG_OPEN, NULL);
+	newpkg = _alpm_pkg_new();
+	if(newpkg == NULL) {
+		handle->pm_errno = ALPM_ERR_MEMORY;
+		goto error;
 	}
+	STRDUP(newpkg->filename, pkgfile,
+			handle->pm_errno = ALPM_ERR_MEMORY; goto error);
+	newpkg->size = st.st_size;
 
 	_alpm_log(handle, ALPM_LOG_DEBUG, "starting package load for %s\n", pkgfile);
 
@@ -476,6 +487,7 @@ alpm_pkg_t *_alpm_pkg_load_internal(alpm_handle_t *handle,
 	}
 
 	archive_read_finish(archive);
+	CLOSE(fd);
 
 	/* internal fields for package struct */
 	newpkg->origin = PKG_FROM_FILE;
@@ -504,6 +516,9 @@ pkg_invalid:
 error:
 	_alpm_pkg_free(newpkg);
 	archive_read_finish(archive);
+	if(fd >= 0) {
+		CLOSE(fd);
+	}
 
 	return NULL;
 }