#include "server.cmdline.h"
#include "server.h"
#include "vss.h"
-#include "db.h"
+#include "afs.h"
#include <mysql/mysql.h>
#include <mysql/mysql_version.h>
+#include <regex.h>
#include "error.h"
#include "net.h"
#include "string.h"
static void *mysql_ptr = NULL;
-static struct para_macro macro_list[] = {
+/**
+ * contains name/replacement pairs used by s_a_r_list()
+ *
+ * \sa s_a_r()
+ */
+struct para_macro {
+ /** the name of the macro */
+ const char *name;
+ /** the replacement text */
+ const char *replacement;
+};
+
+static const struct para_macro mysql_macro_list[] = {
{ .name = "IS_N_SET",
.replacement = "(data.%s != '1')"
}, {
}
};
+/**
+ * simple search and replace routine
+ *
+ * \param src source string
+ * \param macro_name the name of the macro
+ * \param replacement the replacement format string
+ *
+ * In \p src, replace each occurence of \p macro_name(arg) by the string
+ * determined by the \p replacement format string. \p replacement may (but
+ * needs not) contain a single string conversion specifier (%s) which gets
+ * replaced by \p arg.
+ *
+ * \return A string in which all matches in \p src are replaced, or \p NULL if
+ * an syntax error was encountered. Caller must free the result.
+ *
+ * \sa regcomp(3)
+ */
+__must_check __malloc static char *s_a_r(const char *src, const char* macro_name,
+ const char *replacement)
+{
+ regex_t preg;
+ size_t nmatch = 1;
+ regmatch_t pmatch[1];
+ int eflags = 0;
+ char *dest = NULL;
+ const char *bufptr = src;
+
+ if (!macro_name || !replacement || !src)
+ return para_strdup(src);
+ regcomp(&preg, macro_name, 0);
+ while (regexec(&preg, bufptr, nmatch, pmatch, eflags)
+ != REG_NOMATCH) {
+ char *tmp, *arg, *o_bracket, *c_bracket;
+
+ o_bracket = strchr(bufptr + pmatch[0].rm_so, '(');
+ c_bracket = o_bracket? strchr(o_bracket, ')') : NULL;
+ if (!c_bracket)
+ goto out;
+ tmp = para_strdup(bufptr);
+ tmp[pmatch[0].rm_so] = '\0';
+ dest = para_strcat(dest, tmp);
+ free(tmp);
+
+ arg = para_strdup(o_bracket + 1);
+ arg[c_bracket - o_bracket - 1] = '\0';
+ tmp = make_message(replacement, arg);
+ free(arg);
+ dest = para_strcat(dest, tmp);
+ free(tmp);
+ bufptr = c_bracket;
+ bufptr++;
+ }
+ dest = para_strcat(dest, bufptr);
+// PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
+out:
+ regfree(&preg);
+ return dest;
+}
+
+/**
+ * replace a string according to a list of macros
+ *
+ * \param macro_list the array containing a macro/replacement pairs.
+ * \param src the source string
+ *
+ * This function just calls s_a_r() for each element of \p macro_list.
+ *
+ * \return \p NULL if one of the underlying calls to \p s_a_r returned \p NULL.
+ * Otherwise the completely expanded version of \p src is returned.
+ */
+__must_check __malloc static char *s_a_r_list(const struct para_macro *macro_list,
+ char *src)
+{
+ const struct para_macro *mp = macro_list;
+ char *ret = NULL, *tmp = para_strdup(src);
+
+ while (mp->name) {
+ ret = s_a_r(tmp, mp->name, mp->replacement);
+ free(tmp);
+ if (!ret) /* syntax error */
+ return NULL;
+ tmp = ret;
+ mp++;
+ }
+ //PARA_DEBUG_LOG("%s: returning %s\n", __func__, dest);
+ return ret;
+}
+
static int real_query(const char *query)
{
if (!mysql_ptr)
/*
* history
*/
-int com_hist(int fd, int argc, char *argv[]) {
+int com_hist(int fd, int argc, char *argv[])
+{
int ret;
void *result = NULL;
char *q, *atts;
if (!row[0])
goto out;
- tmp = make_message("%s X-Attribute-%s: ', %s, '\n", query,
+ tmp = make_message("%sX-Attribute-%s: ', %s, '\n", query,
row[0], row[0]);
free(query);
query = tmp;
return ret;
}
-/* get attributes by name. If verbose is not 0, get_a writes a string
- * into atts of the form 'att1="0",att2="1"', which is used in com_cam
- * for contructing a mysql update query.
- * never returns NULL in *NON VERBOSE* mode
+/*
+ * get attributes by name. If verbose is not 0, this function returns a string
+ * of the form 'att1="0",att2="1"'... which is used in com_cam() for
+ * constructing a mysql update query. Otherwise the space-separated list of all
+ * attributes which are set in the audio file given by name is returned. Never
+ * returns NULL in *NON VERBOSE* mode.
*/
static char *get_atts(char *name, int verbose)
{
char *atts = NULL, *buf, *ebn;
void *result = NULL, *result2 = NULL;
MYSQL_ROW row, row2;
- int i, ret;
- unsigned int num_fields;
+ int i;
+ unsigned num_fields;
- ret = -E_NOATTS;
result2 = get_all_attributes();
if (!result2)
goto out;
- ret = -E_ESCAPE;
- if (!(ebn = escaped_basename(name)))
+ ebn = escaped_basename(name);
+ if (!ebn)
goto out;
buf = make_message("select * from data where name='%s'", ebn);
free(ebn);
- ret = -E_NORESULT;
result = get_result(buf);
free(buf);
if (!result)
goto out;
- ret = -E_EMPTY_RESULT;
num_fields = mysql_num_fields(result);
if (num_fields < 5)
goto out;
mysql_data_seek(result2, 4); /* skip Lastplayed, Numplayed... */
row = mysql_fetch_row(result);
- ret = -E_NOROW;
if (!row)
goto out;
for (i = 4; i < num_fields; i++) {
if (verbose)
atts = para_strcat(atts, is_set? "=\"1\"" : "=\"0\"");
}
- ret = 1;
out:
if (result2)
mysql_free_result(result2);
continue;
arg = line + n;
if (!strcmp(command, "accept:")) {
- char *tmp2 = s_a_r_list(macro_list, arg);
+ char *tmp2 = s_a_r_list(mysql_macro_list, arg);
if (accept_opts)
accept_opts = para_strcat(
accept_opts, " or ");
continue;
}
if (!strcmp(command, "deny:")) {
- char *tmp2 = s_a_r_list(macro_list, arg);
+ char *tmp2 = s_a_r_list(mysql_macro_list, arg);
if (deny_opts)
deny_opts = para_strcat(deny_opts, " or ");
deny_opts = para_strcat(deny_opts, tmp2);
continue;
}
if (!score && !strcmp(command, "score:"))
- score = s_a_r_list(macro_list, arg);
+ score = s_a_r_list(mysql_macro_list, arg);
}
if (!score) {
- score = s_a_r_list(macro_list, conf.mysql_default_score_arg);
+ score = s_a_r_list(mysql_macro_list, conf.mysql_default_score_arg);
if (!score)
goto out;
}
static int com_la_info(int fd, int argc, char *argv[])
{
char *name = NULL, *meta = NULL, *atts = NULL, *dir = NULL;
- int ret, com_la = strcmp(argv[0], "info");
+ int ret, la = strcmp(argv[0], "info");
if (argc < 2) {
ret = -E_GET_AUDIO_FILE;
meta = get_meta(name, 1);
atts = get_atts(name, 0);
dir = get_dir(name);
- if (com_la)
+ if (la)
ret = send_va_buffer(fd, "%s\n", atts);
else
ret = send_va_buffer(fd, "dir: %s\n" "%s\n" "attributes: %s\n",
projects / paraslash.git / blobdiff