diff options
Diffstat (limited to 'xpa/xpaaccess.c')
| -rw-r--r-- | xpa/xpaaccess.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/xpa/xpaaccess.c b/xpa/xpaaccess.c new file mode 100644 index 0000000..81643ac --- /dev/null +++ b/xpa/xpaaccess.c @@ -0,0 +1,212 @@ +/* + * Copyright (c) 1999-2003 Smithsonian Astrophysical Observatory + */ + +#include <xpap.h> + +#define MAX_XPAS 10000 + +extern char *optarg; +extern int optind; + +#ifdef ANSI_FUNC +void +usage (char *s) +#else +void usage(s) + char *s; +#endif +{ + fprintf(stderr, "\n"); + fprintf(stderr, "usage:\n"); + fprintf(stderr, " %s [-c] [-h] [-i nsinet] [-m method] [-n] [-t sval,lval] [-u users] [-v|-V] <template> [type]\n", s); + fprintf(stderr, "\n"); + fprintf(stderr, "switches:\n"); + fprintf(stderr, "\t-c\tcontact each access point individually to see if it is available\n"); + fprintf(stderr, "\t-h\tprint this message\n"); + fprintf(stderr, "\t-i\toverride XPA_NSINET environment variable\n"); + fprintf(stderr, "\t-m\toverride XPA_METHOD environment variable\n"); + fprintf(stderr, "\t-n\treturn number of matches instead of \"yes\" or \"no\"\n"); + fprintf(stderr, "\t-t \toverride XPA_[SHORT,LONG]_TIMEOUT environment variables\n"); + fprintf(stderr, "\t-u \toverride XPA_NSUSERS environment variable\n"); + fprintf(stderr, "\t-v\tprint info about successful access points\n"); + fprintf(stderr, "\t-V\tprint info and errors about all access points\n"); + fprintf(stderr, "\t--version display version and exit\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "xpaaccess returns \"yes\" if there are existing XPA access points that match\n"); + fprintf(stderr, "the template (and optional access type: g,i,s), and returns \"no\" otherwise.\n"); + fprintf(stderr, "If -n is specified, the number of matches is returned.\n"); + fprintf(stderr, "Templates are of the form [class:]name. Wildcards *,?,[] are accepted.\n"); + fprintf(stderr, "\n"); + fprintf(stderr, "examples:\n"); + fprintf(stderr, "\tcsh> if( `xpaaccess ds9` == \"yes\") then ...\n" ); + fprintf(stderr, "\tcsh> set got=`xpaaccess -n ds9 g`\n"); + fprintf(stderr, "\n(version: %s)\n", XPA_VERSION); + exit(0); +} + +/* catch error from pre 2.1 server -- if we find this error, we know the + access point is available */ +#define OLD_SERVER(s) strstr(s, "XPA$ERROR invalid xpa command in initialization string") + +#ifdef ANSI_FUNC +int +main (int argc, char **argv) +#else +int +main(argc, argv) + int argc; + char **argv; +#endif +{ + int i; + int c; + int got; + int n=0; + int donum=0; + int verbosity=0; + int contact=0; + char cmd[SZ_LINE]; + char mode[SZ_LINE]; + char *type=NULL; + char *xtmpl=NULL; + char **rclasses; + char **rnames; + char **rmethods; + char **rinfos; + char *names[MAX_XPAS]; + char *errs[MAX_XPAS]; + XPA xpa=NULL; + + /* display version and exit, if necessary */ + if( (argc == 2) && !strcmp(argv[1], "--version") ){ + fprintf(stderr, "%s\n", XPA_VERSION); + exit(0); + } + + /* start with no mode flag */ + *mode = '\0'; + + /* we want the args in the same order in which they arrived, and + gnu getopt sometimes changes things without this */ + putenv("POSIXLY_CORRECT=true"); + + /* process switch arguments */ + while ((c = getopt(argc, argv, "chi:m:nt:u:vVwW")) != -1){ + switch(c){ + case 'c': + contact=1; + break; + case 'h': + usage(argv[0]); + case 'i': + snprintf(cmd, SZ_LINE, "XPA_NSINET=%s", optarg); + putenv(xstrdup(cmd)); + break; + case 'm': + snprintf(cmd, SZ_LINE, "XPA_METHOD=%s", optarg); + putenv(xstrdup(cmd)); + break; + case 'n': + donum=1; + break; + case 't': + { + int xip=0; + char xbuf[SZ_LINE]; + newdtable(",;"); + if( word(optarg, xbuf, &xip) && *xbuf && (*xbuf != '*') ){ + snprintf(cmd, SZ_LINE, "XPA_SHORT_TIMEOUT=%s", xbuf); + putenv(xstrdup(cmd)); + } + if( word(optarg, xbuf, &xip) && *xbuf && (*xbuf != '*') ){ + snprintf(cmd, SZ_LINE, "XPA_LONG_TIMEOUT=%s", xbuf); + putenv(xstrdup(cmd)); + } + freedtable(); + } + break; + case 'u': + snprintf(cmd, SZ_LINE, "XPA_NSUSERS=%s", optarg); + putenv(xstrdup(cmd)); + break; + case 'v': + verbosity=1; + break; + case 'V': + verbosity=2; + break; + /* for backward compatibility with 1.0 */ + case 'w': + case 'W': + break; + } + } + + /* we must have a template */ + if( optind >= argc ){ + usage(argv[0]); + } + else{ + xtmpl = argv[optind]; + optind++; + if( optind < argc ){ + type = argv[optind]; + } + } + + /* if we need to contact each server ... */ + if( contact ){ + got = XPAAccess(xpa, xtmpl, type, mode, names, errs, MAX_XPAS); + for(i=0; i<got; i++){ + if( !errs[i] || OLD_SERVER(errs[i]) ){ + if( verbosity ) fprintf(stdout, "%s\n", names[i]); + n++; + } + else{ + if( verbosity >= 2 ) fprintf(stdout, "%s", errs[i]); + } + if( errs[i] ) xfree(errs[i]); + if( names[i] ) xfree(names[i]); + } + } + /* only contact name server */ + else{ + n = XPANSLookup(xpa, xtmpl, type, &rclasses, &rnames, &rmethods, &rinfos); + /* free up the space */ + for(i=0; i<n; i++){ + if( verbosity ){ + fprintf(stdout, "%s", rmethods[i]); + if( strcmp(rinfos[i], XPA_DEF_CLIENT_INFO) ) + fprintf(stdout, " %s", rinfos[i]); + fprintf(stdout, "\n"); + } + /* done with these strings */ + xfree(rclasses[i]); + xfree(rnames[i]); + xfree(rmethods[i]); + xfree(rinfos[i]); + } + /* free up arrays returned by name server */ + if( n > 0 ){ + xfree(rclasses); + xfree(rnames); + xfree(rmethods); + xfree(rinfos); + } + } + + /* print out number */ + if( !verbosity && donum ){ + fprintf(stdout, "%d\n", n); + } + /* print out yes/no */ + else if( !verbosity && !donum ){ + if( n > 0 ) + fprintf(stdout, "yes\n"); + else + fprintf(stdout, "no\n"); + } + fflush(stdout); + return(n); +} |