/mandos/release

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Viewing changes to plugins.d/splashy.c

* README (The Plugin System): Removed redundant text about options and
                              files for the plugins, this is now
                              documented in the manuals for the
                              plugins.

* plugins.d/mandos-client.c (main): Remove comment which was copied
                                    from another program by mistake.
                                    Use "sscanf" instead of "strtol"
                                    to parse numbers; this uses the
                                    correct type instead of casting.
                                    Don't report errors when removing
                                    temporary directory if directory
                                    is already gone.

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Lines of Context:
plugins.d/splashy.c
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#include <stddef.h>             /* NULL */
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#include <stdlib.h>             /* getenv() */
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#include <stdio.h>              /* asprintf(), perror() */
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#include <stdlib.h>             /* EXIT_FAILURE, free(),
 
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#include <stdlib.h>             /* EXIT_FAILURE, free(), strtoul(),
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                                   EXIT_SUCCESS */
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#include <sys/types.h>          /* pid_t, DIR, struct dirent,
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                                   ssize_t */
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#include <dirent.h>             /* opendir(), readdir(), closedir() */
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#include <inttypes.h>           /* intmax_t, strtoimax() */
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#include <sys/stat.h>           /* struct stat, lstat(), S_ISLNK */
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#include <iso646.h>             /* not, or, and */
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#include <unistd.h>             /* readlink(), fork(), execl(),
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    for(struct dirent *proc_ent = readdir(proc_dir);
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        proc_ent != NULL;
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        proc_ent = readdir(proc_dir)){
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      pid_t pid;
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      {
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        intmax_t tmpmax;
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        char *tmp;
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        errno = 0;
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        tmpmax = strtoimax(proc_ent->d_name, &tmp, 10);
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        if(errno != 0 or tmp == proc_ent->d_name or *tmp != '\0'
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           or tmpmax != (pid_t)tmpmax){
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          /* Not a process */
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          continue;
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        }
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        pid = (pid_t)tmpmax;
 
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      pid_t pid = (pid_t) strtoul(proc_ent->d_name, NULL, 10);
 
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      if(pid == 0){
 
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        /* Not a process */
 
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        continue;
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      }
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      /* Find the executable name by doing readlink() on the
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         /proc/<pid>/exe link */
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    /* Child; will become new splashy process */
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    /* Make the effective user ID (root) the only user ID instead of
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       the real user ID (_mandos) */
 
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       the real user ID (mandos) */
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    ret = setuid(geteuid());
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    if(ret == -1){
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      perror("setuid");