diff options
| -rw-r--r-- | bundle.c | 124 | ||||
| -rw-r--r-- | bundle.h | 1 | ||||
| -rw-r--r-- | transport.c | 24 |
3 files changed, 90 insertions, 59 deletions
@@ -23,50 +23,102 @@ static void add_to_ref_list(const unsigned char *sha1, const char *name, list->nr++; } -/* returns an fd */ -int read_bundle_header(const char *path, struct bundle_header *header) +/* Eventually this should go to strbuf.[ch] */ +static int strbuf_readline_fd(struct strbuf *sb, int fd) { - char buffer[1024]; - int fd; - long fpos; - FILE *ffd = fopen(path, "rb"); + strbuf_reset(sb); + + while (1) { + char ch; + ssize_t len = xread(fd, &ch, 1); + if (len < 0) + return -1; + strbuf_addch(sb, ch); + if (ch == '\n') + break; + } + return 0; +} - if (!ffd) - return error("could not open '%s'", path); - if (!fgets(buffer, sizeof(buffer), ffd) || - strcmp(buffer, bundle_signature)) { - fclose(ffd); - return error("'%s' does not look like a v2 bundle file", path); +static int parse_bundle_header(int fd, struct bundle_header *header, + const char *report_path) +{ + struct strbuf buf = STRBUF_INIT; + int status = 0; + + /* The bundle header begins with the signature */ + if (strbuf_readline_fd(&buf, fd) || + strcmp(buf.buf, bundle_signature)) { + if (report_path) + error("'%s' does not look like a v2 bundle file", + report_path); + status = -1; + goto abort; } - while (fgets(buffer, sizeof(buffer), ffd) - && buffer[0] != '\n') { - int is_prereq = buffer[0] == '-'; - int offset = is_prereq ? 1 : 0; - int len = strlen(buffer); + + /* The bundle header ends with an empty line */ + while (!strbuf_readline_fd(&buf, fd) && + buf.len && buf.buf[0] != '\n') { unsigned char sha1[20]; - struct ref_list *list = is_prereq ? &header->prerequisites - : &header->references; - char delim; - - if (len && buffer[len - 1] == '\n') - buffer[len - 1] = '\0'; - if (get_sha1_hex(buffer + offset, sha1)) { - warning("unrecognized header: %s", buffer); - continue; + int is_prereq = 0; + + if (*buf.buf == '-') { + is_prereq = 1; + strbuf_remove(&buf, 0, 1); + } + strbuf_rtrim(&buf); + + /* + * Tip lines have object name, SP, and refname. + * Prerequisites have object name that is optionally + * followed by SP and subject line. + */ + if (get_sha1_hex(buf.buf, sha1) || + (40 <= buf.len && !isspace(buf.buf[40])) || + (!is_prereq && buf.len <= 40)) { + if (report_path) + error("unrecognized header: %s%s (%d)", + (is_prereq ? "-" : ""), buf.buf, (int)buf.len); + status = -1; + break; + } else { + if (is_prereq) + add_to_ref_list(sha1, "", &header->prerequisites); + else + add_to_ref_list(sha1, buf.buf + 41, &header->references); } - delim = buffer[40 + offset]; - if (!isspace(delim) && (delim != '\0' || !is_prereq)) - die ("invalid header: %s", buffer); - add_to_ref_list(sha1, isspace(delim) ? - buffer + 41 + offset : "", list); } - fpos = ftell(ffd); - fclose(ffd); - fd = open(path, O_RDONLY); + + abort: + if (status) { + close(fd); + fd = -1; + } + strbuf_release(&buf); + return fd; +} + +int read_bundle_header(const char *path, struct bundle_header *header) +{ + int fd = open(path, O_RDONLY); + if (fd < 0) return error("could not open '%s'", path); - lseek(fd, fpos, SEEK_SET); - return fd; + return parse_bundle_header(fd, header, path); +} + +int is_bundle(const char *path, int quiet) +{ + struct bundle_header header; + int fd = open(path, O_RDONLY); + + if (fd < 0) + return 0; + memset(&header, 0, sizeof(header)); + fd = parse_bundle_header(fd, &header, quiet ? NULL : path); + if (fd >= 0) + close(fd); + return (fd >= 0); } static int list_refs(struct ref_list *r, int argc, const char **argv) @@ -14,6 +14,7 @@ struct bundle_header { struct ref_list references; }; +int is_bundle(const char *path, int quiet); int read_bundle_header(const char *path, struct bundle_header *header); int create_bundle(struct bundle_header *header, const char *path, int argc, const char **argv); diff --git a/transport.c b/transport.c index 57138d908a..4ff21ad28d 100644 --- a/transport.c +++ b/transport.c @@ -859,28 +859,6 @@ static int is_local(const char *url) has_dos_drive_prefix(url); } -static int is_gitfile(const char *url) -{ - struct stat st; - char buf[9]; - int fd, len; - if (stat(url, &st)) - return 0; - if (!S_ISREG(st.st_mode)) - return 0; - if (st.st_size < 10 || st.st_size > 9 + PATH_MAX) - return 0; - - fd = open(url, O_RDONLY); - if (fd < 0) - die_errno("Error opening '%s'", url); - len = read_in_full(fd, buf, sizeof(buf)); - close(fd); - if (len != sizeof(buf)) - die("Error reading %s", url); - return !prefixcmp(buf, "gitdir: "); -} - static int is_file(const char *url) { struct stat buf; @@ -929,7 +907,7 @@ struct transport *transport_get(struct remote *remote, const char *url) ret->fetch = fetch_objs_via_rsync; ret->push = rsync_transport_push; ret->smart_options = NULL; - } else if (is_local(url) && is_file(url) && !is_gitfile(url)) { + } else if (is_local(url) && is_file(url) && is_bundle(url, 1)) { struct bundle_transport_data *data = xcalloc(1, sizeof(*data)); ret->data = data; ret->get_refs_list = get_refs_from_bundle; |