125 lines
2.5 KiB
C
125 lines
2.5 KiB
C
#include <sys/types.h>
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#include <err.h>
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#include <errno.h>
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#include <regex.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <syslog.h>
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#include <unistd.h>
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#include "utils.h"
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#include "vger.h"
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#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined( __NetBSD__) || defined(__DragonFly__)
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#include <string.h>
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#else
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#include <bsd/string.h>
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#endif
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/* e*foo() functions are the equivalent of foo() but handle errors.
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* In case an error happens:
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* The error is printed to stdout
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* return 1
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*/
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#ifdef __OpenBSD__
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void
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eunveil(const char *path, const char *permissions)
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{
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if (unveil(path, permissions) == -1) {
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status(41, "Error when unveil(), see logs");
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stop(EXIT_FAILURE, "unveil on %s failed", path);
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}
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}
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void
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epledge(const char *promises, const char *execpromises)
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{
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if (pledge(promises, execpromises) == -1) {
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status(41, "Error when pledge(), see logs");
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stop(EXIT_FAILURE, "pledge failed for: %s", promises);
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}
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}
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#endif
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size_t
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esnprintf(char *str, size_t size, const char *format, ...)
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{
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/* usage : esnprintf(str, sizeof(str), "%s ... %s", arg1, arg2); */
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va_list ap;
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size_t ret = 0;
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va_start(ap, format);
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ret = vsnprintf(str, size, format, ap);
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va_end(ap);
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if (ret < 0 || ret >= size) {
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status(41, "vnsprintf failed: Output trunkated");
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stop(EXIT_FAILURE, "vsnprintf: Output trunkated");
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}
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return ret;
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}
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int
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esetenv(const char *name, const char *value, int overwrite)
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{
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int ret = 0;
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ret = setenv(name, value, overwrite);
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if (ret != 0) {
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status(41, "setenv() failed, see logs");
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stop(EXIT_FAILURE, "setenv() %s:%s", name, value);
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}
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return ret;
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}
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void
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echdir(const char *path)
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{
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if (chdir(path) == -1) {
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switch (errno) {
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case ENOTDIR: /* FALLTHROUGH */
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case ENOENT:
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status(51, "file not found");
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break;
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case EACCES:
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status(50, "Forbidden path");
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break;
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default:
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status(50, "Internal server error");
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break;
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}
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stop(EXIT_FAILURE, "chdir(%s) failed", path);
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}
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}
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/* read the file fd byte after byte in buffer and write it to stdout
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* return number of bytes read
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*/
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size_t
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print_file(FILE *fd)
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{
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ssize_t nread = 0;
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ssize_t datasent = 0;
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char *buffer[BUFSIZ];
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while ((nread = fread(buffer, 1, sizeof(buffer), fd)) != 0)
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datasent += fwrite(buffer, 1, nread, stdout);
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return datasent;
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}
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void
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getsubexp(const char *str, regmatch_t m, char *dst)
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{
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size_t len = 0;
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if ((len = m.rm_eo - m.rm_so) > 0) { /* skip empty substring */
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len = m.rm_eo - m.rm_so;
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memcpy(dst, str + m.rm_so, len);
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dst[len] = '\0';
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}
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}
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