diff options
Diffstat (limited to 'cap.c')
| -rw-r--r-- | cap.c | 135 |
1 files changed, 135 insertions, 0 deletions
@@ -0,0 +1,135 @@ +/* + * Copyright 2001, 2002, 2003 David Mansfield and Cobite, Inc. + * See COPYING file for license information + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <cbtcommon/debug.h> +#include <cbtcommon/text_util.h> + +#include "cap.h" +#include "cvs_direct.h" + +extern CvsServerCtx * cvs_direct_ctx; + +static char client_version[BUFSIZ]; +static char server_version[BUFSIZ]; + +static int check_cvs_version(int, int, int); +static int check_version_string(const char *, int, int, int); + +int cvs_check_cap(int cap) +{ + int ret; + + switch(cap) + { + case CAP_HAVE_RLOG: + if (!(ret = check_cvs_version(1,11,1))) + { + debug(DEBUG_APPERROR, + "WARNING: Your CVS client version:\n[%s]\n" + "and/or server version:\n[%s]\n" + "are too old to properly support the rlog command. \n" + "This command was introduced in 1.11.1. Cvsps\n" + "will use log instead, but PatchSet numbering\n" + "may become unstable due to pruned empty\n" + "directories.\n", client_version, server_version); + } + break; + + default: + debug(DEBUG_APPERROR, "unknown cvs capability check %d", cap); + exit(1); + } + + return ret; +} + +static void get_version_external() +{ + FILE * cvsfp; + + strcpy(client_version, "(UNKNOWN CLIENT)"); + strcpy(server_version, "(UNKNOWN SERVER)"); + + if (!(cvsfp = popen("cvs version 2>/dev/null", "r"))) + { + debug(DEBUG_APPERROR, "cannot popen cvs version. exiting"); + exit(1); + } + + if (!fgets(client_version, BUFSIZ, cvsfp)) + { + debug(DEBUG_APPMSG1, "WARNING: malformed CVS version: no data"); + goto out; + } + + chop(client_version); + + if (strncmp(client_version, "Client", 6) == 0) + { + if (!fgets(server_version, BUFSIZ, cvsfp)) + { + debug(DEBUG_APPMSG1, "WARNING: malformed CVS version: no server data"); + goto out; + } + chop(server_version); + } + else + { + server_version[0] = 0; + } + + out: + pclose(cvsfp); +} + +int check_cvs_version(int req_major, int req_minor, int req_extra) +{ + if (!client_version[0]) + { + if (cvs_direct_ctx) + cvs_version(cvs_direct_ctx, client_version, server_version); + else + get_version_external(); + } + + return (check_version_string(client_version, req_major, req_minor, req_extra) && + (!server_version[0] || check_version_string(server_version, req_major, req_minor, req_extra))); +} + +int check_version_string(const char * str, int req_major, int req_minor, int req_extra) +{ + char * p; + int major, minor, extra; + int skip = 6; + + p = strstr(str, "(CVS) "); + + if (!p) { + p = strstr(str, "(CVSNT)"); + skip = 8; + } + + if (!p) + { + debug(DEBUG_APPMSG1, "WARNING: malformed CVS version str: %s", str); + return 0; + } + + p += skip; + if (sscanf(p, "%d.%d.%d", &major, &minor, &extra) != 3) + { + debug(DEBUG_APPMSG1, "WARNING: malformed CVS version: %s", str); + return 0; + } + + return (major > req_major || + (major == req_major && minor > req_minor) || + (major == req_major && minor == req_minor && extra >= req_extra)); +} + |