diff options
| -rw-r--r-- | cgit.c | 10 | ||||
| -rw-r--r-- | cgit.h | 2 | ||||
| -rw-r--r-- | shared.c | 71 |
3 files changed, 78 insertions, 5 deletions
@@ -148,7 +148,7 @@ void config_cb(const char *name, const char *value) else if (!strcmp(name, "cache-size")) ctx.cfg.cache_size = atoi(value); else if (!strcmp(name, "cache-root")) - ctx.cfg.cache_root = xstrdup(value); + ctx.cfg.cache_root = xstrdup(expand_macros(value)); else if (!strcmp(name, "cache-root-ttl")) ctx.cfg.cache_root_ttl = atoi(value); else if (!strcmp(name, "cache-repo-ttl")) @@ -177,9 +177,9 @@ void config_cb(const char *name, const char *value) ctx.cfg.max_commit_count = atoi(value); else if (!strcmp(name, "scan-path")) if (!ctx.cfg.nocache && ctx.cfg.cache_size) - process_cached_repolist(value); + process_cached_repolist(expand_macros(value)); else - scan_tree(value, repo_config); + scan_tree(expand_macros(value), repo_config); else if (!strcmp(name, "source-filter")) ctx.cfg.source_filter = new_filter(value, 1); else if (!strcmp(name, "summary-log")) @@ -203,7 +203,7 @@ void config_cb(const char *name, const char *value) else if (!prefixcmp(name, "mimetype.")) add_mimetype(name + 9, value); else if (!strcmp(name, "include")) - parse_configfile(value, config_cb); + parse_configfile(expand_macros(value), config_cb); } static void querystring_cb(const char *name, const char *value) @@ -688,7 +688,7 @@ int main(int argc, const char **argv) cgit_repolist.repos = NULL; cgit_parse_args(argc, argv); - parse_configfile(ctx.env.cgit_config, config_cb); + parse_configfile(expand_macros(ctx.env.cgit_config), config_cb); ctx.repo = NULL; http_parse_querystring(ctx.qry.raw, querystring_cb); @@ -296,4 +296,6 @@ extern int cgit_close_filter(struct cgit_filter *filter); extern int readfile(const char *path, char **buf, size_t *size); +extern char *expand_macros(const char *txt); + #endif /* CGIT_H */ @@ -423,3 +423,74 @@ int readfile(const char *path, char **buf, size_t *size) close(fd); return (*size == st.st_size ? 0 : e); } + +int is_token_char(char c) +{ + return isalnum(c) || c == '_'; +} + +/* Replace name with getenv(name), return pointer to zero-terminating char + */ +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; +} |