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author | wollman <wollman@FreeBSD.org> | 1995-01-19 21:28:01 +0000 |
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committer | wollman <wollman@FreeBSD.org> | 1995-01-19 21:28:01 +0000 |
commit | 314433f416dadb6bcf20776dd2034bcf2e21dda5 (patch) | |
tree | 7445c8f9c56a2d4e84a3fe544af631e7aad24836 /lib/libss/help.c | |
parent | 0916b5648b6e21b684e10cfba42b81769ea51035 (diff) | |
download | FreeBSD-src-314433f416dadb6bcf20776dd2034bcf2e21dda5.zip FreeBSD-src-314433f416dadb6bcf20776dd2034bcf2e21dda5.tar.gz |
MIT SIPB `subsystem' library, needed for `kadmin' and some other MIT programs.
Diffstat (limited to 'lib/libss/help.c')
-rw-r--r-- | lib/libss/help.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/lib/libss/help.c b/lib/libss/help.c new file mode 100644 index 0000000..376d2ea --- /dev/null +++ b/lib/libss/help.c @@ -0,0 +1,143 @@ +/* + * Copyright 1987, 1988 by MIT Student Information Processing Board + * + * For copyright info, see copyright.h. + */ + +#include <sys/param.h> +#include <sys/file.h> +#include <sys/wait.h> +#include "ss_internal.h" +#include "copyright.h" + +extern int errno; + +void ss_help (argc, argv, sci_idx, info_ptr) + int argc; + char const * const *argv; + int sci_idx; + pointer info_ptr; +{ + char buffer[MAXPATHLEN]; + char const *request_name; + int code; + int fd, child; + register int idx; + register ss_data *info; + + request_name = ss_current_request(sci_idx, &code); + if (code != 0) { + ss_perror(sci_idx, code, ""); + return; /* no ss_abort_line, if invalid invocation */ + } + if (argc == 1) { + ss_list_requests(argc, argv, sci_idx, info_ptr); + return; + } + else if (argc != 2) { + /* should do something better than this */ + sprintf(buffer, "usage:\n\t%s [topic|command]\nor\t%s\n", + request_name, request_name); + ss_perror(sci_idx, 0, buffer); + return; + } + info = ss_info(sci_idx); + if (info->info_dirs == (char **)NULL) { + ss_perror(sci_idx, SS_ET_NO_INFO_DIR, (char *)NULL); + return; + } + if (info->info_dirs[0] == (char *)NULL) { + ss_perror(sci_idx, SS_ET_NO_INFO_DIR, (char *)NULL); + return; + } + for (idx = 0; info->info_dirs[idx] != (char *)NULL; idx++) { + (void) strcpy(buffer, info->info_dirs[idx]); + (void) strcat(buffer, "/"); + (void) strcat(buffer, argv[1]); + (void) strcat(buffer, ".info"); + if ((fd = open(&buffer[0], O_RDONLY, 0)) >= 0) goto got_it; + } + if ((fd = open(&buffer[0], O_RDONLY, 0)) < 0) { + char buf[MAXPATHLEN]; + strcpy(buf, "No info found for "); + strcat(buf, argv[1]); + ss_perror(sci_idx, 0, buf); + return; + } +got_it: + switch (child = fork()) { + case -1: + ss_perror(sci_idx, errno, "Can't fork for pager"); + return; + case 0: + (void) dup2(fd, 0); /* put file on stdin */ + ss_page_stdin(); + default: + (void) close(fd); /* what can we do if it fails? */ + while (wait((union wait *)NULL) != child) { + /* do nothing if wrong pid */ + }; + } +} + +#include <sys/types.h> +#include <sys/dir.h> + +void ss_add_info_dir(sci_idx, info_dir, code_ptr) + int sci_idx; + char *info_dir; + int *code_ptr; +{ + register ss_data *info; + DIR *d; + int n_dirs; + register char **dirs; + + info = ss_info(sci_idx); + if (info_dir == NULL && *info_dir) { + *code_ptr = SS_ET_NO_INFO_DIR; + return; + } + if ((d = opendir(info_dir)) == (DIR *)NULL) { + *code_ptr = errno; + return; + } + closedir(d); + dirs = info->info_dirs; + for (n_dirs = 0; dirs[n_dirs] != (char *)NULL; n_dirs++) + ; /* get number of non-NULL dir entries */ + dirs = (char **)realloc((char *)dirs, + (unsigned)(n_dirs + 2)*sizeof(char *)); + if (dirs == (char **)NULL) { + info->info_dirs = (char **)NULL; + *code_ptr = errno; + return; + } + info->info_dirs = dirs; + dirs[n_dirs + 1] = (char *)NULL; + dirs[n_dirs] = malloc((unsigned)strlen(info_dir)+1); + strcpy(dirs[n_dirs], info_dir); + *code_ptr = 0; +} + +void ss_delete_info_dir(sci_idx, info_dir, code_ptr) + int sci_idx; + char *info_dir; + int *code_ptr; +{ + register char **i_d; + register char **info_dirs; + + info_dirs = ss_info(sci_idx)->info_dirs; + for (i_d = info_dirs; *i_d; i_d++) { + if (!strcmp(*i_d, info_dir)) { + while (*i_d) { + *i_d = *(i_d+1); + i_d++; + } + *code_ptr = 0; + return; + } + } + *code_ptr = SS_ET_NO_INFO_DIR; +} |