diff options
Diffstat (limited to 'shared.c')
| -rw-r--r-- | shared.c | 579 |
1 files changed, 579 insertions, 0 deletions
diff --git a/shared.c b/shared.c new file mode 100644 index 0000000000..8115469a7c --- /dev/null +++ b/shared.c @@ -0,0 +1,579 @@ +/* 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->extra_head_content = NULL; + ret->owner = NULL; + ret->homepage = NULL; + ret->section = ctx.cfg.section; + ret->snapshots = ctx.cfg.snapshots; + ret->enable_blame = ctx.cfg.enable_blame; + 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(the_repository, 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_object_file(oid, &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.out_line = 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; + opt.flags.recursive = 1; + 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; + + if (strcmp(str, "all") == 0) + return INT_MAX; + + 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 |= cgit_snapshot_format_bit(f); + 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; + size_t len; + + len = 0; + value = getenv(name); + if (value) { + len = strlen(value) + 1; + if (len > maxlength) + len = maxlength; + strlcpy(name, value, len); + --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; +} |