diff options
Diffstat (limited to 'src/RdFToI.c')
| -rw-r--r-- | src/RdFToI.c | 190 |
1 files changed, 115 insertions, 75 deletions
diff --git a/src/RdFToI.c b/src/RdFToI.c index d1242c4..e91d5e9 100644 --- a/src/RdFToI.c +++ b/src/RdFToI.c @@ -33,16 +33,14 @@ \*****************************************************************************/ /* $XFree86$ */ +/* October 2004, source code review by Thomas Biege <thomas@suse.de> */ + #include "XpmI.h" -#include <sys/stat.h> -#if !defined(NO_ZPIPE) && defined(WIN32) -# define popen _popen -# define pclose _pclose -# if defined(STAT_ZFILE) -# include <io.h> -# define stat _stat -# define fstat _fstat -# endif +#ifndef NO_ZPIPE +#include <fcntl.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/wait.h> #endif LFUNC(OpenReadFile, int, (char *filename, xpmData *mdata)); @@ -120,6 +118,67 @@ XpmReadFileToXpmImage(filename, image, info) } #endif /* CXPMPROG */ +#ifndef NO_ZPIPE +/* Do not depend on errno after read_through */ +FILE* +xpmPipeThrough(fd, cmd, arg1, mode) + int fd; + const char* cmd; + const char* arg1; + const char* mode; +{ + FILE* fp; + int status, fds[2], in = 0, out = 1; + pid_t pid; + if ( 'w' == *mode ) + out = 0, in = 1; + if ( pipe(fds) < 0 ) + return NULL; + pid = fork(); + if ( pid < 0 ) + goto fail1; + if ( 0 == pid ) + { + close(fds[in]); + if ( dup2(fds[out], out) < 0 ) + goto err; + close(fds[out]); + if ( dup2(fd, in) < 0 ) + goto err; + close(fd); + pid = fork(); + if ( pid < 0 ) + goto err; + if ( 0 == pid ) + { + execlp(cmd, cmd, arg1, NULL); + perror(cmd); + goto err; + } + _exit(0); + err: + _exit(1); + } + close(fds[out]); + /* calling process: wait for first child */ + while ( waitpid(pid, &status, 0) < 0 && EINTR == errno ) + ; + if ( WIFSIGNALED(status) || + (WIFEXITED(status) && WEXITSTATUS(status) != 0) ) + goto fail2; + fp = fdopen(fds[in], mode); + if ( !fp ) + goto fail2; + close(fd); /* still open in 2nd child */ + return fp; +fail1: + close(fds[out]); +fail2: + close(fds[in]); + return NULL; +} +#endif + /* * open the given file to be read as an xpmData which is returned. */ @@ -128,72 +187,62 @@ OpenReadFile(filename, mdata) char *filename; xpmData *mdata; { -#ifndef NO_ZPIPE - char buf[BUFSIZ]; -# ifdef STAT_ZFILE - char *compressfile; - struct stat status; -# endif -#endif - if (!filename) { mdata->stream.file = (stdin); mdata->type = XPMFILE; } else { -#ifndef NO_ZPIPE - int len = strlen(filename); - if ((len > 2) && !strcmp(".Z", filename + (len - 2))) { - mdata->type = XPMPIPE; - sprintf(buf, "uncompress -c \"%s\"", filename); - if (!(mdata->stream.file = popen(buf, "r"))) - return (XpmOpenFailed); - - } else if ((len > 3) && !strcmp(".gz", filename + (len - 3))) { - mdata->type = XPMPIPE; - sprintf(buf, "gunzip -qc \"%s\"", filename); - if (!(mdata->stream.file = popen(buf, "r"))) - return (XpmOpenFailed); - - } else { -# ifdef STAT_ZFILE - if (!(compressfile = (char *) XpmMalloc(len + 4))) + int fd = open(filename, O_RDONLY); +#if defined(NO_ZPIPE) + if ( fd < 0 ) + return XpmOpenFailed; +#else + const char* ext = NULL; + if ( fd >= 0 ) + ext = strrchr(filename, '.'); +#ifdef STAT_ZFILE /* searching for z-files if the given name not found */ + else + { + size_t len = strlen(filename); + char *compressfile = (char *) XpmMalloc(len + 4); + if ( !compressfile ) return (XpmNoMemory); - - sprintf(compressfile, "%s.Z", filename); - if (!stat(compressfile, &status)) { - sprintf(buf, "uncompress -c \"%s\"", compressfile); - if (!(mdata->stream.file = popen(buf, "r"))) { + strcpy(compressfile, filename); + strcpy(compressfile + len, ext = ".Z"); + fd = open(compressfile, O_RDONLY); + if ( fd < 0 ) + { + strcpy(compressfile + len, ext = ".gz"); + fd = open(compressfile, O_RDONLY); + if ( fd < 0 ) + { XpmFree(compressfile); - return (XpmOpenFailed); - } - mdata->type = XPMPIPE; - } else { - sprintf(compressfile, "%s.gz", filename); - if (!stat(compressfile, &status)) { - sprintf(buf, "gunzip -c \"%s\"", compressfile); - if (!(mdata->stream.file = popen(buf, "r"))) { - XpmFree(compressfile); - return (XpmOpenFailed); - } - mdata->type = XPMPIPE; - } else { -# endif -#endif - if (!(mdata->stream.file = fopen(filename, "r"))) { -#if !defined(NO_ZPIPE) && defined(STAT_ZFILE) - XpmFree(compressfile); -#endif - return (XpmOpenFailed); - } - mdata->type = XPMFILE; -#ifndef NO_ZPIPE -# ifdef STAT_ZFILE + return XpmOpenFailed; } } XpmFree(compressfile); -# endif } #endif + if ( ext && !strcmp(ext, ".Z") ) + { + mdata->type = XPMPIPE; + mdata->stream.file = xpmPipeThrough(fd, "uncompress", "-c", "r"); + } + else if ( ext && !strcmp(ext, ".gz") ) + { + mdata->type = XPMPIPE; + mdata->stream.file = xpmPipeThrough(fd, "gunzip", "-qc", "r"); + } + else +#endif /* z-files */ + { + mdata->type = XPMFILE; + mdata->stream.file = fdopen(fd, "r"); + } + if (!mdata->stream.file) + { + close(fd); + return (XpmOpenFailed); + } } mdata->CommentLength = 0; #ifdef CXPMPROG @@ -210,15 +259,6 @@ static void xpmDataClose(mdata) xpmData *mdata; { - switch (mdata->type) { - case XPMFILE: - if (mdata->stream.file != (stdin)) - fclose(mdata->stream.file); - break; -#ifndef NO_ZPIPE - case XPMPIPE: - pclose(mdata->stream.file); - break; -#endif - } + if (mdata->stream.file != (stdin)) + fclose(mdata->stream.file); } |