diff options
Diffstat (limited to 'contrib/tcp_wrappers/percent_x.c')
-rw-r--r-- | contrib/tcp_wrappers/percent_x.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/contrib/tcp_wrappers/percent_x.c b/contrib/tcp_wrappers/percent_x.c deleted file mode 100644 index c95a1ea4141e9..0000000000000 --- a/contrib/tcp_wrappers/percent_x.c +++ /dev/null @@ -1,86 +0,0 @@ - /* - * percent_x() takes a string and performs %<char> expansions. It aborts the - * program when the expansion would overflow the output buffer. The result - * of %<char> expansion may be passed on to a shell process. For this - * reason, characters with a special meaning to shells are replaced by - * underscores. - * - * Diagnostics are reported through syslog(3). - * - * Author: Wietse Venema, Eindhoven University of Technology, The Netherlands. - */ - -#ifndef lint -static char sccsid[] = "@(#) percent_x.c 1.4 94/12/28 17:42:37"; -#endif - -/* System libraries. */ - -#include <stdio.h> -#include <syslog.h> -#include <string.h> - -extern void exit(); - -/* Local stuff. */ - -#include "tcpd.h" - -/* percent_x - do %<char> expansion, abort if result buffer is too small */ - -char *percent_x(result, result_len, string, request) -char *result; -int result_len; -char *string; -struct request_info *request; -{ - char *bp = result; - char *end = result + result_len - 1; /* end of result buffer */ - char *expansion; - int expansion_len; - static char ok_chars[] = "1234567890!@%-_=+:,./\ -abcdefghijklmnopqrstuvwxyz\ -ABCDEFGHIJKLMNOPQRSTUVWXYZ"; - char *str = string; - char *cp; - int ch; - - /* - * Warning: we may be called from a child process or after pattern - * matching, so we cannot use clean_exit() or tcpd_jump(). - */ - - while (*str) { - if (*str == '%' && (ch = str[1]) != 0) { - str += 2; - expansion = - ch == 'a' ? eval_hostaddr(request->client) : - ch == 'A' ? eval_hostaddr(request->server) : - ch == 'c' ? eval_client(request) : - ch == 'd' ? eval_daemon(request) : - ch == 'h' ? eval_hostinfo(request->client) : - ch == 'H' ? eval_hostinfo(request->server) : - ch == 'n' ? eval_hostname(request->client) : - ch == 'N' ? eval_hostname(request->server) : - ch == 'p' ? eval_pid(request) : - ch == 's' ? eval_server(request) : - ch == 'u' ? eval_user(request) : - ch == '%' ? "%" : (tcpd_warn("unrecognized %%%c", ch), ""); - for (cp = expansion; *(cp += strspn(cp, ok_chars)); /* */ ) - *cp = '_'; - expansion_len = cp - expansion; - } else { - expansion = str++; - expansion_len = 1; - } - if (bp + expansion_len >= end) { - tcpd_warn("percent_x: expansion too long: %.30s...", result); - sleep(5); - exit(0); - } - memcpy(bp, expansion, expansion_len); - bp += expansion_len; - } - *bp = 0; - return (result); -} |