diff options
Diffstat (limited to 'fontconfig/src/fccompat.c')
| -rw-r--r-- | fontconfig/src/fccompat.c | 118 |
1 files changed, 117 insertions, 1 deletions
diff --git a/fontconfig/src/fccompat.c b/fontconfig/src/fccompat.c index 2aa29ddcc..0a9c135fe 100644 --- a/fontconfig/src/fccompat.c +++ b/fontconfig/src/fccompat.c @@ -31,11 +31,20 @@ #include "fcint.h" +#include <errno.h> +#if HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#if HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif #if HAVE_FCNTL_H #include <fcntl.h> #endif #include <stdarg.h> #include <stdlib.h> +#include <string.h> +#include <time.h> #ifdef O_CLOEXEC #define FC_O_CLOEXEC O_CLOEXEC @@ -47,6 +56,58 @@ #else #define FC_O_LARGEFILE 0 #endif +#ifdef O_BINARY +#define FC_O_BINARY O_BINARY +#else +#define FC_O_BINARY 0 +#endif +#ifdef O_TEMPORARY +#define FC_O_TEMPORARY O_TEMPORARY +#else +#define FC_O_TEMPORARY 0 +#endif +#ifdef O_NOINHERIT +#define FC_O_NOINHERIT O_NOINHERIT +#else +#define FC_O_NOINHERIT 0 +#endif + +#if !defined (HAVE_MKOSTEMP) && !defined(HAVE_MKSTEMP) && !defined(HAVE__MKTEMP_S) +static int +mkstemp (char *template) +{ + static const char s[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; + int fd, i; + size_t l; + + if (template == NULL) + { + errno = EINVAL; + return -1; + } + l = strlen (template); + if (l < 6 || strcmp (&template[l - 6], "XXXXXX") != 0) + { + errno = EINVAL; + return -1; + } + do + { + errno = 0; + for (i = l - 6; i < l; i++) + { + int r = FcRandom (); + template[i] = s[r % 62]; + } + fd = FcOpen (template, FC_O_BINARY | O_CREAT | O_EXCL | FC_O_TEMPORARY | FC_O_NOINHERIT | O_RDWR, 0600); + } while (fd < 0 && errno == EEXIST); + if (fd >= 0) + errno = 0; + + return fd; +} +#define HAVE_MKSTEMP 1 +#endif int FcOpen(const char *pathname, int flags, ...) @@ -84,7 +145,7 @@ FcMakeTempfile (char *template) # ifdef F_DUPFD_CLOEXEC if (fd != -1) { - int newfd = fcntl(fd, F_DUPFD_CLOEXEC); + int newfd = fcntl(fd, F_DUPFD_CLOEXEC, STDIN_FILENO); close(fd); fd = newfd; @@ -109,3 +170,58 @@ FcMakeTempfile (char *template) return fd; } + +int32_t +FcRandom(void) +{ + int32_t result; + +#if HAVE_RANDOM_R + static struct random_data fcrandbuf; + static char statebuf[256]; + static FcBool initialized = FcFalse; + + if (initialized != FcTrue) + { + initstate_r(time(NULL), statebuf, 256, &fcrandbuf); + initialized = FcTrue; + } + + random_r(&fcrandbuf, &result); +#elif HAVE_RANDOM + static char statebuf[256]; + char *state; + static FcBool initialized = FcFalse; + + if (initialized != FcTrue) + { + state = initstate(time(NULL), statebuf, 256); + initialized = FcTrue; + } + else + state = setstate(statebuf); + + result = random(); + + setstate(state); +#elif HAVE_LRAND48 + result = lrand48(); +#elif HAVE_RAND_R + static unsigned int seed = time(NULL); + + result = rand_r(&seed); +#elif HAVE_RAND + static FcBool initialized = FcFalse; + + if (initialized != FcTrue) + { + srand(time(NULL)); + initialized = FcTrue; + } + result = rand(); +#else +# error no random number generator function available. +#endif + + return result; +} |