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Diff for /embedaddon/sudo/common/fileops.c between versions 1.1 and 1.1.1.3

version 1.1, 2012/02/21 16:23:02 version 1.1.1.3, 2013/07/22 10:46:11
Line 1 Line 1
 /*  /*
 * Copyright (c) 1999-2005, 2007, 2009-2011 * Copyright (c) 1999-2005, 2007, 2009-2013
  *      Todd C. Miller <Todd.Miller@courtesan.com>   *      Todd C. Miller <Todd.Miller@courtesan.com>
  *   *
  * Permission to use, copy, modify, and distribute this software for any   * Permission to use, copy, modify, and distribute this software for any
Line 22 Line 22
 #include <config.h>  #include <config.h>
   
 #include <sys/types.h>  #include <sys/types.h>
 #include <sys/param.h>  
 #include <sys/time.h>  #include <sys/time.h>
 #ifdef HAVE_FLOCK  #ifdef HAVE_FLOCK
 # include <sys/file.h>  # include <sys/file.h>
 #endif /* HAVE_FLOCK */  #endif /* HAVE_FLOCK */
#include <stdio.h>#ifdef STDC_HEADERS
 # include <stdlib.h>
 # include <stddef.h>
 #else
 # ifdef HAVE_STDLIB_H
 #  include <stdlib.h>
 # endif
 #endif /* STDC_HEADERS */
 #ifdef HAVE_STRING_H  #ifdef HAVE_STRING_H
   # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
   #  include <memory.h>
   # endif
 # include <string.h>  # include <string.h>
 #endif /* HAVE_STRING_H */  #endif /* HAVE_STRING_H */
 #ifdef HAVE_STRINGS_H  #ifdef HAVE_STRINGS_H
 # include <strings.h>  # include <strings.h>
#endif /* HAVE_STRINGS_H */#endif /* HAVE_STRING_H */
 #if defined(HAVE_MALLOC_H) && !defined(STDC_HEADERS)
 # include <malloc.h>
 #endif /* HAVE_MALLOC_H && !STDC_HEADERS */
 #include <ctype.h>  #include <ctype.h>
 #include <limits.h>  
 #ifdef HAVE_UNISTD_H  #ifdef HAVE_UNISTD_H
 # include <unistd.h>  # include <unistd.h>
 #endif /* HAVE_UNISTD_H */  #endif /* HAVE_UNISTD_H */
 #include <fcntl.h>  #include <fcntl.h>
   #ifdef HAVE_STDBOOL_H
   # include <stdbool.h>
   #else
   # include "compat/stdbool.h"
   #endif
 #if TIME_WITH_SYS_TIME  #if TIME_WITH_SYS_TIME
 # include <time.h>  # include <time.h>
 #endif  #endif
#ifndef HAVE_TIMESPEC#ifndef HAVE_STRUCT_TIMESPEC
 # include "compat/timespec.h"  # include "compat/timespec.h"
 #endif  #endif
   
 #include "missing.h"  #include "missing.h"
 #include "fileops.h"  #include "fileops.h"
   #include "sudo_debug.h"
   
 #ifndef LINE_MAX  
 # define LINE_MAX 2048  
 #endif  
   
 /*  /*
  * Update the access and modify times on an fd or file.   * Update the access and modify times on an fd or file.
  */   */
Line 61  int Line 74  int
 touch(int fd, char *path, struct timeval *tvp)  touch(int fd, char *path, struct timeval *tvp)
 {  {
     struct timeval times[2];      struct timeval times[2];
       int rval = -1;
       debug_decl(touch, SUDO_DEBUG_UTIL)
   
     if (tvp != NULL) {      if (tvp != NULL) {
         times[0].tv_sec = times[1].tv_sec = tvp->tv_sec;          times[0].tv_sec = times[1].tv_sec = tvp->tv_sec;
Line 69  touch(int fd, char *path, struct timeval *tvp) Line 84  touch(int fd, char *path, struct timeval *tvp)
   
 #if defined(HAVE_FUTIME) || defined(HAVE_FUTIMES)  #if defined(HAVE_FUTIME) || defined(HAVE_FUTIMES)
     if (fd != -1)      if (fd != -1)
        return futimes(fd, tvp ? times : NULL);        rval = futimes(fd, tvp ? times : NULL);
     else      else
 #endif  #endif
     if (path != NULL)      if (path != NULL)
        return utimes(path, tvp ? times : NULL);        rval = utimes(path, tvp ? times : NULL);
    else    debug_return_int(rval);
        return -1; 
 }  }
   
 /*  /*
  * Lock/unlock a file.   * Lock/unlock a file.
  */   */
 #ifdef HAVE_LOCKF  #ifdef HAVE_LOCKF
intbool
 lock_file(int fd, int lockit)  lock_file(int fd, int lockit)
 {  {
     int op = 0;      int op = 0;
       debug_decl(lock_file, SUDO_DEBUG_UTIL)
   
     switch (lockit) {      switch (lockit) {
         case SUDO_LOCK:          case SUDO_LOCK:
Line 98  lock_file(int fd, int lockit) Line 113  lock_file(int fd, int lockit)
             op = F_ULOCK;              op = F_ULOCK;
             break;              break;
     }      }
    return lockf(fd, op, 0) == 0;    debug_return_bool(lockf(fd, op, 0) == 0);
 }  }
 #elif HAVE_FLOCK  #elif HAVE_FLOCK
intbool
 lock_file(int fd, int lockit)  lock_file(int fd, int lockit)
 {  {
     int op = 0;      int op = 0;
       debug_decl(lock_file, SUDO_DEBUG_UTIL)
   
     switch (lockit) {      switch (lockit) {
         case SUDO_LOCK:          case SUDO_LOCK:
Line 117  lock_file(int fd, int lockit) Line 133  lock_file(int fd, int lockit)
             op = LOCK_UN;              op = LOCK_UN;
             break;              break;
     }      }
    return flock(fd, op) == 0;    debug_return_bool(flock(fd, op) == 0);
 }  }
 #else  #else
intbool
 lock_file(int fd, int lockit)  lock_file(int fd, int lockit)
 {  {
 #ifdef F_SETLK  #ifdef F_SETLK
     int func;      int func;
     struct flock lock;      struct flock lock;
       debug_decl(lock_file, SUDO_DEBUG_UTIL)
   
     lock.l_start = 0;      lock.l_start = 0;
     lock.l_len = 0;      lock.l_len = 0;
Line 134  lock_file(int fd, int lockit) Line 151  lock_file(int fd, int lockit)
     lock.l_whence = SEEK_SET;      lock.l_whence = SEEK_SET;
     func = (lockit == SUDO_LOCK) ? F_SETLKW : F_SETLK;      func = (lockit == SUDO_LOCK) ? F_SETLKW : F_SETLK;
   
    return fcntl(fd, func, &lock) == 0;    debug_return_bool(fcntl(fd, func, &lock) == 0);
 #else  #else
    return TRUE;    return true;
 #endif  #endif
 }  }
 #endif  #endif
   
 /*  /*
 * Read a line of input, remove comments and strip off leading * Read a line of input, honoring line continuation chars.
 * and trailing spaces.  Returns static storage that is reused. * Remove comments and strips off leading and trailing spaces.
  * Returns the line length and updates the buf and bufsize pointers.
  * XXX - just use a struct w/ state, including getline buffer?
  *       could also make comment char and line continuation configurable
  */   */
char *ssize_t
sudo_parseln(FILE *fp)sudo_parseln(char **bufp, size_t *bufsizep, unsigned int *lineno, FILE *fp)
 {  {
    size_t len;    size_t len, linesize = 0, total = 0;
    char *cp = NULL;    char *cp, *line = NULL;
    static char buf[LINE_MAX];    bool continued;
     debug_decl(sudo_parseln, SUDO_DEBUG_UTIL)
   
    if (fgets(buf, sizeof(buf), fp) != NULL) {    do {
        /* Remove comments */        continued = false;
        if ((cp = strchr(buf, '#')) != NULL)        len = getline(&line, &linesize, fp);
         if (len == -1)
             break;
         if (lineno != NULL)
             (*lineno)++;
 
         /* Remove trailing newline(s) if present. */
         while (len > 0 && (line[len - 1] == '\n' || line[len - 1] == '\r'))
             line[--len] = '\0';
 
         /* Remove comments or check for line continuation (but not both) */
         if ((cp = strchr(line, '#')) != NULL) {
             *cp = '\0';              *cp = '\0';
               len = (size_t)(cp - line);
           } else if (len > 0 && line[len - 1] == '\\' && (len == 1 || line[len - 2] != '\\')) {
               line[--len] = '\0';
               continued = true;
           }
   
        /* Trim leading and trailing whitespace/newline */        /* Trim leading and trailing whitespace */
        len = strlen(buf);        if (!continued) {
        while (len > 0 && isspace((unsigned char)buf[len - 1]))            while (len > 0 && isblank((unsigned char)line[len - 1]))
            buf[--len] = '\0';                line[--len] = '\0';
        for (cp = buf; isblank((unsigned char)*cp); cp++)        }
            continue;        for (cp = line; isblank((unsigned char)*cp); cp++)
    }            len--;
    return cp;
         if (*bufp == NULL || total + len >= *bufsizep) {
             void *tmp;
             size_t size = total + len + 1;
 
             if (size < 64) {
                 size = 64;
             } else if (size <= 0x80000000) {
                 /* Round up to next highest power of two. */
                 size--;
                 size |= size >> 1;
                 size |= size >> 2;
                 size |= size >> 4;
                 size |= size >> 8;
                 size |= size >> 16;
                 size++;
             }
             if ((tmp = realloc(*bufp, size)) == NULL)
                 break;
             *bufp = tmp;
             *bufsizep = size;
         }
         memcpy(*bufp + total, cp, len + 1);
         total += len;
     } while (continued);
     free(line);
     if (len == -1 && total == 0)
         debug_return_size_t((size_t)-1);
     debug_return_size_t(total);
 }  }
Removed from v.1.1  
changed lines
  Added in v.1.1.1.3

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