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-rw-r--r--shared.c579
1 files changed, 579 insertions, 0 deletions
diff --git a/shared.c b/shared.c
new file mode 100644
index 0000000..8115469
--- /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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-01 20:11:36 +0000