| /* shared.c: global vars + some callback functions |
| * |
| * Copyright (C) 2006-2014 cgit Development Team <cgit@lists.zx2c4.com> |
| * |
| * Licensed under GNU General Public License v2 |
| * (see COPYING for full license text) |
| */ |
| |
| #include "cgit.h" |
| |
| struct cgit_repolist cgit_repolist; |
| struct cgit_context ctx; |
| |
| int chk_zero(int result, char *msg) |
| { |
| if (result != 0) |
| die_errno("%s", msg); |
| return result; |
| } |
| |
| int chk_positive(int result, char *msg) |
| { |
| if (result <= 0) |
| die_errno("%s", msg); |
| return result; |
| } |
| |
| int chk_non_negative(int result, char *msg) |
| { |
| if (result < 0) |
| die_errno("%s", msg); |
| return result; |
| } |
| |
| char *cgit_default_repo_desc = "[no description]"; |
| struct cgit_repo *cgit_add_repo(const char *url) |
| { |
| struct cgit_repo *ret; |
| |
| if (++cgit_repolist.count > cgit_repolist.length) { |
| if (cgit_repolist.length == 0) |
| cgit_repolist.length = 8; |
| else |
| cgit_repolist.length *= 2; |
| cgit_repolist.repos = xrealloc(cgit_repolist.repos, |
| cgit_repolist.length * |
| sizeof(struct cgit_repo)); |
| } |
| |
| ret = &cgit_repolist.repos[cgit_repolist.count-1]; |
| memset(ret, 0, sizeof(struct cgit_repo)); |
| ret->url = trim_end(url, '/'); |
| ret->name = ret->url; |
| ret->path = NULL; |
| ret->desc = cgit_default_repo_desc; |
| ret->owner = NULL; |
| ret->homepage = NULL; |
| ret->section = ctx.cfg.section; |
| ret->snapshots = ctx.cfg.snapshots; |
| ret->enable_commit_graph = ctx.cfg.enable_commit_graph; |
| ret->enable_log_filecount = ctx.cfg.enable_log_filecount; |
| ret->enable_log_linecount = ctx.cfg.enable_log_linecount; |
| ret->enable_remote_branches = ctx.cfg.enable_remote_branches; |
| ret->enable_subject_links = ctx.cfg.enable_subject_links; |
| ret->enable_html_serving = ctx.cfg.enable_html_serving; |
| ret->max_stats = ctx.cfg.max_stats; |
| ret->branch_sort = ctx.cfg.branch_sort; |
| ret->commit_sort = ctx.cfg.commit_sort; |
| ret->module_link = ctx.cfg.module_link; |
| ret->readme = ctx.cfg.readme; |
| ret->mtime = -1; |
| ret->about_filter = ctx.cfg.about_filter; |
| ret->commit_filter = ctx.cfg.commit_filter; |
| ret->source_filter = ctx.cfg.source_filter; |
| ret->email_filter = ctx.cfg.email_filter; |
| ret->owner_filter = ctx.cfg.owner_filter; |
| ret->clone_url = ctx.cfg.clone_url; |
| ret->submodules.strdup_strings = 1; |
| ret->hide = ret->ignore = 0; |
| return ret; |
| } |
| |
| struct cgit_repo *cgit_get_repoinfo(const char *url) |
| { |
| int i; |
| struct cgit_repo *repo; |
| |
| for (i = 0; i < cgit_repolist.count; i++) { |
| repo = &cgit_repolist.repos[i]; |
| if (repo->ignore) |
| continue; |
| if (!strcmp(repo->url, url)) |
| return repo; |
| } |
| return NULL; |
| } |
| |
| void cgit_free_commitinfo(struct commitinfo *info) |
| { |
| free(info->author); |
| free(info->author_email); |
| free(info->committer); |
| free(info->committer_email); |
| free(info->subject); |
| free(info->msg); |
| free(info->msg_encoding); |
| free(info); |
| } |
| |
| char *trim_end(const char *str, char c) |
| { |
| int len; |
| |
| if (str == NULL) |
| return NULL; |
| len = strlen(str); |
| while (len > 0 && str[len - 1] == c) |
| len--; |
| if (len == 0) |
| return NULL; |
| return xstrndup(str, len); |
| } |
| |
| char *ensure_end(const char *str, char c) |
| { |
| size_t len = strlen(str); |
| char *result; |
| |
| if (len && str[len - 1] == c) |
| return xstrndup(str, len); |
| |
| result = xmalloc(len + 2); |
| memcpy(result, str, len); |
| result[len] = '/'; |
| result[len + 1] = '\0'; |
| return result; |
| } |
| |
| void strbuf_ensure_end(struct strbuf *sb, char c) |
| { |
| if (!sb->len || sb->buf[sb->len - 1] != c) |
| strbuf_addch(sb, c); |
| } |
| |
| void cgit_add_ref(struct reflist *list, struct refinfo *ref) |
| { |
| size_t size; |
| |
| if (list->count >= list->alloc) { |
| list->alloc += (list->alloc ? list->alloc : 4); |
| size = list->alloc * sizeof(struct refinfo *); |
| list->refs = xrealloc(list->refs, size); |
| } |
| list->refs[list->count++] = ref; |
| } |
| |
| static struct refinfo *cgit_mk_refinfo(const char *refname, const struct object_id *oid) |
| { |
| struct refinfo *ref; |
| |
| ref = xmalloc(sizeof (struct refinfo)); |
| ref->refname = xstrdup(refname); |
| ref->object = parse_object(oid); |
| switch (ref->object->type) { |
| case OBJ_TAG: |
| ref->tag = cgit_parse_tag((struct tag *)ref->object); |
| break; |
| case OBJ_COMMIT: |
| ref->commit = cgit_parse_commit((struct commit *)ref->object); |
| break; |
| } |
| return ref; |
| } |
| |
| void cgit_free_taginfo(struct taginfo *tag) |
| { |
| if (tag->tagger) |
| free(tag->tagger); |
| if (tag->tagger_email) |
| free(tag->tagger_email); |
| if (tag->msg) |
| free(tag->msg); |
| free(tag); |
| } |
| |
| static void cgit_free_refinfo(struct refinfo *ref) |
| { |
| if (ref->refname) |
| free((char *)ref->refname); |
| switch (ref->object->type) { |
| case OBJ_TAG: |
| cgit_free_taginfo(ref->tag); |
| break; |
| case OBJ_COMMIT: |
| cgit_free_commitinfo(ref->commit); |
| break; |
| } |
| free(ref); |
| } |
| |
| void cgit_free_reflist_inner(struct reflist *list) |
| { |
| int i; |
| |
| for (i = 0; i < list->count; i++) { |
| cgit_free_refinfo(list->refs[i]); |
| } |
| free(list->refs); |
| } |
| |
| int cgit_refs_cb(const char *refname, const struct object_id *oid, int flags, |
| void *cb_data) |
| { |
| struct reflist *list = (struct reflist *)cb_data; |
| struct refinfo *info = cgit_mk_refinfo(refname, oid); |
| |
| if (info) |
| cgit_add_ref(list, info); |
| return 0; |
| } |
| |
| void cgit_diff_tree_cb(struct diff_queue_struct *q, |
| struct diff_options *options, void *data) |
| { |
| int i; |
| |
| for (i = 0; i < q->nr; i++) { |
| if (q->queue[i]->status == 'U') |
| continue; |
| ((filepair_fn)data)(q->queue[i]); |
| } |
| } |
| |
| static int load_mmfile(mmfile_t *file, const struct object_id *oid) |
| { |
| enum object_type type; |
| |
| if (is_null_oid(oid)) { |
| file->ptr = (char *)""; |
| file->size = 0; |
| } else { |
| file->ptr = read_sha1_file(oid->hash, &type, |
| (unsigned long *)&file->size); |
| } |
| return 1; |
| } |
| |
| /* |
| * Receive diff-buffers from xdiff and concatenate them as |
| * needed across multiple callbacks. |
| * |
| * This is basically a copy of xdiff-interface.c/xdiff_outf(), |
| * ripped from git and modified to use globals instead of |
| * a special callback-struct. |
| */ |
| static char *diffbuf = NULL; |
| static int buflen = 0; |
| |
| static int filediff_cb(void *priv, mmbuffer_t *mb, int nbuf) |
| { |
| int i; |
| |
| for (i = 0; i < nbuf; i++) { |
| if (mb[i].ptr[mb[i].size-1] != '\n') { |
| /* Incomplete line */ |
| diffbuf = xrealloc(diffbuf, buflen + mb[i].size); |
| memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size); |
| buflen += mb[i].size; |
| continue; |
| } |
| |
| /* we have a complete line */ |
| if (!diffbuf) { |
| ((linediff_fn)priv)(mb[i].ptr, mb[i].size); |
| continue; |
| } |
| diffbuf = xrealloc(diffbuf, buflen + mb[i].size); |
| memcpy(diffbuf + buflen, mb[i].ptr, mb[i].size); |
| ((linediff_fn)priv)(diffbuf, buflen + mb[i].size); |
| free(diffbuf); |
| diffbuf = NULL; |
| buflen = 0; |
| } |
| if (diffbuf) { |
| ((linediff_fn)priv)(diffbuf, buflen); |
| free(diffbuf); |
| diffbuf = NULL; |
| buflen = 0; |
| } |
| return 0; |
| } |
| |
| int cgit_diff_files(const struct object_id *old_oid, |
| const struct object_id *new_oid, unsigned long *old_size, |
| unsigned long *new_size, int *binary, int context, |
| int ignorews, linediff_fn fn) |
| { |
| mmfile_t file1, file2; |
| xpparam_t diff_params; |
| xdemitconf_t emit_params; |
| xdemitcb_t emit_cb; |
| |
| if (!load_mmfile(&file1, old_oid) || !load_mmfile(&file2, new_oid)) |
| return 1; |
| |
| *old_size = file1.size; |
| *new_size = file2.size; |
| |
| if ((file1.ptr && buffer_is_binary(file1.ptr, file1.size)) || |
| (file2.ptr && buffer_is_binary(file2.ptr, file2.size))) { |
| *binary = 1; |
| if (file1.size) |
| free(file1.ptr); |
| if (file2.size) |
| free(file2.ptr); |
| return 0; |
| } |
| |
| memset(&diff_params, 0, sizeof(diff_params)); |
| memset(&emit_params, 0, sizeof(emit_params)); |
| memset(&emit_cb, 0, sizeof(emit_cb)); |
| diff_params.flags = XDF_NEED_MINIMAL; |
| if (ignorews) |
| diff_params.flags |= XDF_IGNORE_WHITESPACE; |
| emit_params.ctxlen = context > 0 ? context : 3; |
| emit_params.flags = XDL_EMIT_FUNCNAMES; |
| emit_cb.outf = filediff_cb; |
| emit_cb.priv = fn; |
| xdl_diff(&file1, &file2, &diff_params, &emit_params, &emit_cb); |
| if (file1.size) |
| free(file1.ptr); |
| if (file2.size) |
| free(file2.ptr); |
| return 0; |
| } |
| |
| void cgit_diff_tree(const struct object_id *old_oid, |
| const struct object_id *new_oid, |
| filepair_fn fn, const char *prefix, int ignorews) |
| { |
| struct diff_options opt; |
| struct pathspec_item item; |
| |
| memset(&item, 0, sizeof(item)); |
| diff_setup(&opt); |
| opt.output_format = DIFF_FORMAT_CALLBACK; |
| opt.detect_rename = 1; |
| opt.rename_limit = ctx.cfg.renamelimit; |
| DIFF_OPT_SET(&opt, RECURSIVE); |
| if (ignorews) |
| DIFF_XDL_SET(&opt, IGNORE_WHITESPACE); |
| opt.format_callback = cgit_diff_tree_cb; |
| opt.format_callback_data = fn; |
| if (prefix) { |
| item.match = xstrdup(prefix); |
| item.len = strlen(prefix); |
| opt.pathspec.nr = 1; |
| opt.pathspec.items = &item; |
| } |
| diff_setup_done(&opt); |
| |
| if (old_oid && !is_null_oid(old_oid)) |
| diff_tree_oid(old_oid, new_oid, "", &opt); |
| else |
| diff_root_tree_oid(new_oid, "", &opt); |
| diffcore_std(&opt); |
| diff_flush(&opt); |
| |
| free(item.match); |
| } |
| |
| void cgit_diff_commit(struct commit *commit, filepair_fn fn, const char *prefix) |
| { |
| const struct object_id *old_oid = NULL; |
| |
| if (commit->parents) |
| old_oid = &commit->parents->item->object.oid; |
| cgit_diff_tree(old_oid, &commit->object.oid, fn, prefix, |
| ctx.qry.ignorews); |
| } |
| |
| int cgit_parse_snapshots_mask(const char *str) |
| { |
| struct string_list tokens = STRING_LIST_INIT_DUP; |
| struct string_list_item *item; |
| const struct cgit_snapshot_format *f; |
| int rv = 0; |
| |
| /* favor legacy setting */ |
| if (atoi(str)) |
| return 1; |
| |
| string_list_split(&tokens, str, ' ', -1); |
| string_list_remove_empty_items(&tokens, 0); |
| |
| for_each_string_list_item(item, &tokens) { |
| for (f = cgit_snapshot_formats; f->suffix; f++) { |
| if (!strcmp(item->string, f->suffix) || |
| !strcmp(item->string, f->suffix + 1)) { |
| rv |= f->bit; |
| break; |
| } |
| } |
| } |
| |
| string_list_clear(&tokens, 0); |
| return rv; |
| } |
| |
| typedef struct { |
| char * name; |
| char * value; |
| } cgit_env_var; |
| |
| void cgit_prepare_repo_env(struct cgit_repo * repo) |
| { |
| cgit_env_var env_vars[] = { |
| { .name = "CGIT_REPO_URL", .value = repo->url }, |
| { .name = "CGIT_REPO_NAME", .value = repo->name }, |
| { .name = "CGIT_REPO_PATH", .value = repo->path }, |
| { .name = "CGIT_REPO_OWNER", .value = repo->owner }, |
| { .name = "CGIT_REPO_DEFBRANCH", .value = repo->defbranch }, |
| { .name = "CGIT_REPO_SECTION", .value = repo->section }, |
| { .name = "CGIT_REPO_CLONE_URL", .value = repo->clone_url } |
| }; |
| int env_var_count = ARRAY_SIZE(env_vars); |
| cgit_env_var *p, *q; |
| static char *warn = "cgit warning: failed to set env: %s=%s\n"; |
| |
| p = env_vars; |
| q = p + env_var_count; |
| for (; p < q; p++) |
| if (p->value && setenv(p->name, p->value, 1)) |
| fprintf(stderr, warn, p->name, p->value); |
| } |
| |
| /* Read the content of the specified file into a newly allocated buffer, |
| * zeroterminate the buffer and return 0 on success, errno otherwise. |
| */ |
| int readfile(const char *path, char **buf, size_t *size) |
| { |
| int fd, e; |
| struct stat st; |
| |
| fd = open(path, O_RDONLY); |
| if (fd == -1) |
| return errno; |
| if (fstat(fd, &st)) { |
| e = errno; |
| close(fd); |
| return e; |
| } |
| if (!S_ISREG(st.st_mode)) { |
| close(fd); |
| return EISDIR; |
| } |
| *buf = xmalloc(st.st_size + 1); |
| *size = read_in_full(fd, *buf, st.st_size); |
| e = errno; |
| (*buf)[*size] = '\0'; |
| close(fd); |
| return (*size == st.st_size ? 0 : e); |
| } |
| |
| static int is_token_char(char c) |
| { |
| return isalnum(c) || c == '_'; |
| } |
| |
| /* Replace name with getenv(name), return pointer to zero-terminating char |
| */ |
| static char *expand_macro(char *name, int maxlength) |
| { |
| char *value; |
| int len; |
| |
| len = 0; |
| value = getenv(name); |
| if (value) { |
| len = strlen(value); |
| if (len > maxlength) |
| len = maxlength; |
| strncpy(name, value, len); |
| } |
| return name + len; |
| } |
| |
| #define EXPBUFSIZE (1024 * 8) |
| |
| /* Replace all tokens prefixed by '$' in the specified text with the |
| * value of the named environment variable. |
| * NB: the return value is a static buffer, i.e. it must be strdup'd |
| * by the caller. |
| */ |
| char *expand_macros(const char *txt) |
| { |
| static char result[EXPBUFSIZE]; |
| char *p, *start; |
| int len; |
| |
| p = result; |
| start = NULL; |
| while (p < result + EXPBUFSIZE - 1 && txt && *txt) { |
| *p = *txt; |
| if (start) { |
| if (!is_token_char(*txt)) { |
| if (p - start > 0) { |
| *p = '\0'; |
| len = result + EXPBUFSIZE - start - 1; |
| p = expand_macro(start, len) - 1; |
| } |
| start = NULL; |
| txt--; |
| } |
| p++; |
| txt++; |
| continue; |
| } |
| if (*txt == '$') { |
| start = p; |
| txt++; |
| continue; |
| } |
| p++; |
| txt++; |
| } |
| *p = '\0'; |
| if (start && p - start > 0) { |
| len = result + EXPBUFSIZE - start - 1; |
| p = expand_macro(start, len); |
| *p = '\0'; |
| } |
| return result; |
| } |
| |
| char *get_mimetype_for_filename(const char *filename) |
| { |
| char *ext, *mimetype, *token, line[1024], *saveptr; |
| FILE *file; |
| struct string_list_item *mime; |
| |
| if (!filename) |
| return NULL; |
| |
| ext = strrchr(filename, '.'); |
| if (!ext) |
| return NULL; |
| ++ext; |
| if (!ext[0]) |
| return NULL; |
| mime = string_list_lookup(&ctx.cfg.mimetypes, ext); |
| if (mime) |
| return xstrdup(mime->util); |
| |
| if (!ctx.cfg.mimetype_file) |
| return NULL; |
| file = fopen(ctx.cfg.mimetype_file, "r"); |
| if (!file) |
| return NULL; |
| while (fgets(line, sizeof(line), file)) { |
| if (!line[0] || line[0] == '#') |
| continue; |
| mimetype = strtok_r(line, " \t\r\n", &saveptr); |
| while ((token = strtok_r(NULL, " \t\r\n", &saveptr))) { |
| if (!strcasecmp(ext, token)) { |
| fclose(file); |
| return xstrdup(mimetype); |
| } |
| } |
| } |
| fclose(file); |
| return NULL; |
| } |