=================================================================== RCS file: /cvs/mandoc/cgi.c,v retrieving revision 1.132 retrieving revision 1.153 diff -u -p -r1.132 -r1.153 --- mandoc/cgi.c 2016/05/28 13:40:48 1.132 +++ mandoc/cgi.c 2017/03/18 16:48:24 1.153 @@ -1,7 +1,7 @@ -/* $Id: cgi.c,v 1.132 2016/05/28 13:40:48 schwarze Exp $ */ +/* $Id: cgi.c,v 1.153 2017/03/18 16:48:24 schwarze Exp $ */ /* * Copyright (c) 2011, 2012 Kristaps Dzonsons - * Copyright (c) 2014, 2015, 2016 Ingo Schwarze + * Copyright (c) 2014, 2015, 2016, 2017 Ingo Schwarze * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -21,7 +21,9 @@ #include #include +#if HAVE_ERR #include +#endif #include #include #include @@ -74,11 +76,12 @@ static void pg_error_badrequest(const char *); static void pg_error_internal(void); static void pg_index(const struct req *); static void pg_noresult(const struct req *, const char *); +static void pg_redirect(const struct req *, const char *); static void pg_search(const struct req *); static void pg_searchres(const struct req *, struct manpage *, size_t); static void pg_show(struct req *, const char *); -static void resp_begin_html(int, const char *); +static void resp_begin_html(int, const char *, const char *); static void resp_begin_http(int, const char *); static void resp_catman(const struct req *, const char *); static void resp_copy(const char *); @@ -113,17 +116,18 @@ static const char *const sec_names[] = { static const int sec_MAX = sizeof(sec_names) / sizeof(char *); static const char *const arch_names[] = { - "amd64", "alpha", "armish", "armv7", - "hppa", "hppa64", "i386", "landisk", + "amd64", "alpha", "armv7", "arm64", + "hppa", "i386", "landisk", "loongson", "luna88k", "macppc", "mips64", - "octeon", "sgi", "socppc", "sparc", - "sparc64", "zaurus", - "amiga", "arc", "arm32", "atari", - "aviion", "beagle", "cats", "hp300", + "octeon", "sgi", "socppc", "sparc64", + "amiga", "arc", "armish", "arm32", + "atari", "aviion", "beagle", "cats", + "hppa64", "hp300", "ia64", "mac68k", "mvme68k", "mvme88k", "mvmeppc", "palm", "pc532", "pegasos", - "pmax", "powerpc", "solbourne", "sun3", - "vax", "wgrisc", "x68k" + "pmax", "powerpc", "solbourne", "sparc", + "sun3", "vax", "wgrisc", "x68k", + "zaurus" }; static const int arch_MAX = sizeof(arch_names) / sizeof(char *); @@ -137,7 +141,7 @@ html_putchar(char c) switch (c) { case ('"'): - printf(""e;"); + printf("""); break; case ('&'): printf("&"); @@ -337,26 +341,37 @@ resp_copy(const char *filename) fflush(stdout); while ((sz = read(fd, buf, sizeof(buf))) > 0) write(STDOUT_FILENO, buf, sz); + close(fd); } } static void -resp_begin_html(int code, const char *msg) +resp_begin_html(int code, const char *msg, const char *file) { + char *cp; resp_begin_http(code, msg); printf("\n" "\n" "\n" - "\n" - "\n" + " \n" - "%s\n" + " ", + CSS_DIR); + if (file != NULL) { + if ((cp = strrchr(file, '/')) != NULL) + file = cp + 1; + if ((cp = strrchr(file, '.')) != NULL) { + printf("%.*s(%s) - ", (int)(cp - file), file, cp + 1); + } else + printf("%s - ", file); + } + printf("%s\n" "\n" - "\n" - "\n", - CSS_DIR, CUSTOMIZE_TITLE); + "\n", + CUSTOMIZE_TITLE); resp_copy(MAN_DIR "/header.html"); } @@ -376,16 +391,14 @@ resp_searchform(const struct req *req, enum focus focu { int i; - puts(""); - printf("

\n" - "

\n" - "Manual Page Search Parameters\n", + printf("\n" + "

\n" + " Manual Page Search Parameters\n", scriptname); /* Write query input box. */ - printf("q.query != NULL) html_print(req->q.query); printf( "\" size=\"40\""); @@ -395,45 +408,46 @@ resp_searchform(const struct req *req, enum focus focu /* Write submission buttons. */ - printf( "\n" - "\n
\n"); + " \n" + "
\n"); /* Write section selector. */ - puts(""); for (i = 0; i < sec_MAX; i++) { - printf("\n", sec_names[i]); } - puts(""); + puts(" "); /* Write architecture selector. */ - printf( ""); + puts(" "); /* Write manpath selector. */ if (req->psz > 1) { - puts(""); for (i = 0; i < (int)req->psz; i++) { - printf(""); } - puts(""); + puts(" "); } - puts("

\n" - "\n" - "

"); - puts(""); + puts(" \n" + ""); } static int @@ -470,9 +482,6 @@ validate_manpath(const struct req *req, const char* ma { size_t i; - if ( ! strcmp(manpath, "mandoc")) - return 1; - for (i = 0; i < req->psz; i++) if ( ! strcmp(manpath, req->p[i])) return 1; @@ -495,13 +504,13 @@ static void pg_index(const struct req *req) { - resp_begin_html(200, NULL); + resp_begin_html(200, NULL, NULL); resp_searchform(req, FOCUS_QUERY); printf("

\n" "This web interface is documented in the\n" - "man.cgi\n" + "man.cgi(8)\n" "manual, and the\n" - "apropos\n" + "apropos(1)\n" "manual explains the query syntax.\n" "

\n", scriptname, *scriptname == '\0' ? "" : "/", @@ -512,7 +521,7 @@ pg_index(const struct req *req) static void pg_noresult(const struct req *req, const char *msg) { - resp_begin_html(200, NULL); + resp_begin_html(200, NULL, NULL); resp_searchform(req, FOCUS_QUERY); puts("

"); puts(msg); @@ -524,7 +533,7 @@ static void pg_error_badrequest(const char *msg) { - resp_begin_html(400, "Bad Request"); + resp_begin_html(400, "Bad Request", NULL); puts("

Bad Request

\n" "

\n"); puts(msg); @@ -537,12 +546,29 @@ pg_error_badrequest(const char *msg) static void pg_error_internal(void) { - resp_begin_html(500, "Internal Server Error"); + resp_begin_html(500, "Internal Server Error", NULL); puts("

Internal Server Error

"); resp_end_html(); } static void +pg_redirect(const struct req *req, const char *name) +{ + printf("Status: 303 See Other\r\n" + "Location: /"); + if (*scriptname != '\0') + printf("%s/", scriptname); + if (strcmp(req->q.manpath, req->p[0])) + printf("%s/", req->q.manpath); + if (req->q.arch != NULL) + printf("%s/", req->q.arch); + printf("%s", name); + if (req->q.sec != NULL) + printf(".%s", req->q.sec); + printf("\r\nContent-Type: text/html; charset=utf-8\r\n\r\n"); +} + +static void pg_searchres(const struct req *req, struct manpage *r, size_t sz) { char *arch, *archend; @@ -565,53 +591,25 @@ pg_searchres(const struct req *req, struct manpage *r, * If we have just one result, then jump there now * without any delay. */ - printf("Status: 303 See Other\r\n"); - printf("Location: http://%s/%s%s%s/%s", - HTTP_HOST, scriptname, - *scriptname == '\0' ? "" : "/", - req->q.manpath, r[0].file); - printf("\r\n" - "Content-Type: text/html; charset=utf-8\r\n" - "\r\n"); + printf("Status: 303 See Other\r\n" + "Location: /"); + if (*scriptname != '\0') + printf("%s/", scriptname); + if (strcmp(req->q.manpath, req->p[0])) + printf("%s/", req->q.manpath); + printf("%s\r\n" + "Content-Type: text/html; charset=utf-8\r\n\r\n", + r[0].file); return; } - resp_begin_html(200, NULL); - resp_searchform(req, - req->q.equal || sz == 1 ? FOCUS_NONE : FOCUS_QUERY); - - if (sz > 1) { - puts("

"); - puts(""); - - for (i = 0; i < sz; i++) { - printf("\n" - "\n" - "\n" - ""); - } - - puts("

\n" - "q.manpath, r[i].file); - printf("\">"); - html_print(r[i].names); - printf("\n" - "

"); - html_print(r[i].output); - puts("

\n" - "

"); - } - /* * In man(1) mode, show one of the pages * even if more than one is found. */ + iuse = 0; if (req->q.equal || sz == 1) { - puts("

"); - iuse = 0; priouse = 20; archpriouse = 3; for (i = 0; i < sz; i++) { @@ -644,6 +642,36 @@ pg_searchres(const struct req *req, struct manpage *r, priouse = prio; iuse = i; } + resp_begin_html(200, NULL, r[iuse].file); + } else + resp_begin_html(200, NULL, NULL); + + resp_searchform(req, + req->q.equal || sz == 1 ? FOCUS_NONE : FOCUS_QUERY); + + if (sz > 1) { + puts(""); + for (i = 0; i < sz; i++) { + printf(" \n" + " \n" + " \n" + " "); + } + puts("

" + "q.manpath, req->p[0])) + printf("%s/", req->q.manpath); + printf("%s\">", r[i].file); + html_print(r[i].names); + printf("	"); + html_print(r[i].output); + puts("

"); + } + + if (req->q.equal || sz == 1) { + puts("

"); resp_show(req, r[iuse].file); } @@ -803,14 +831,17 @@ resp_format(const struct req *req, const char *file) } mchars_alloc(); - mp = mparse_alloc(MPARSE_SO, MANDOCLEVEL_BADARG, NULL, req->q.manpath); + mp = mparse_alloc(MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1, + MANDOCLEVEL_BADARG, NULL, req->q.manpath); mparse_readfd(mp, fd, file); close(fd); memset(&conf, 0, sizeof(conf)); conf.fragment = 1; + conf.style = mandoc_strdup(CSS_DIR "/mandoc.css"); usepath = strcmp(req->q.manpath, req->p[0]); - mandoc_asprintf(&conf.man, "/%s%s%%N.%%S", + mandoc_asprintf(&conf.man, "/%s%s%s%s%%N.%%S", + scriptname, *scriptname == '\0' ? "" : "/", usepath ? req->q.manpath : "", usepath ? "/" : ""); mparse_result(mp, &man, NULL); @@ -836,6 +867,7 @@ resp_format(const struct req *req, const char *file) mparse_free(mp); mchars_free(); free(conf.man); + free(conf.style); } static void @@ -884,20 +916,15 @@ pg_show(struct req *req, const char *fullpath) free(manpath); return; } + free(manpath); - if (strcmp(manpath, "mandoc")) { - free(req->q.manpath); - req->q.manpath = manpath; - } else - free(manpath); - if ( ! validate_filename(file)) { pg_error_badrequest( "You specified an invalid manual file."); return; } - resp_begin_html(200, NULL); + resp_begin_html(200, NULL, file); resp_searchform(req, FOCUS_NONE); resp_show(req, file); resp_end_html(); @@ -967,9 +994,13 @@ pg_search(const struct req *req) } } - if (0 == mansearch(&search, &paths, argc, argv, &res, &ressz)) + res = NULL; + ressz = 0; + if (req->isquery && req->q.equal && argc == 1) + pg_redirect(req, argv[0]); + else if (mansearch(&search, &paths, argc, argv, &res, &ressz) == 0) pg_noresult(req, "You entered an invalid query."); - else if (0 == ressz) + else if (ressz == 0) pg_noresult(req, "No results found."); else pg_searchres(req, res, ressz); @@ -989,6 +1020,22 @@ main(void) const char *querystring; int i; +#if HAVE_PLEDGE + /* + * The "rpath" pledge could be revoked after mparse_readfd() + * if the file desciptor to "/footer.html" would be opened + * up front, but it's probably not worth the complication + * of the code it would cause: it would require scattering + * pledge() calls in multiple low-level resp_*() functions. + */ + + if (pledge("stdio rpath", NULL) == -1) { + warn("pledge"); + pg_error_internal(); + return EXIT_FAILURE; + } +#endif + /* Poor man's ReDoS mitigation. */ itimer.it_value.tv_sec = 2; @@ -1026,7 +1073,7 @@ main(void) if (*path != '\0') { parse_path_info(&req, path); - if (access(path, F_OK) == -1) + if (req.q.manpath == NULL || access(path, F_OK) == -1) path = ""; } else if ((querystring = getenv("QUERY_STRING")) != NULL) parse_query_string(&req, querystring); @@ -1072,11 +1119,13 @@ main(void) static void parse_path_info(struct req *req, const char *path) { - char *dir; + char *dir[4]; + int i; req->isquery = 0; req->q.equal = 1; req->q.manpath = mandoc_strdup(path); + req->q.arch = NULL; /* Mandatory manual page name. */ if ((req->q.query = strrchr(req->q.manpath, '/')) == NULL) { @@ -1095,27 +1144,50 @@ parse_path_info(struct req *req, const char *path) } /* Handle the case of name[.section] only. */ - if (req->q.manpath == NULL) { - req->q.arch = NULL; + if (req->q.manpath == NULL) return; - } req->q.query = mandoc_strdup(req->q.query); - /* Optional architecture. */ - dir = strrchr(req->q.manpath, '/'); - if (dir != NULL && strncmp(dir + 1, "man", 3) != 0) { - *dir++ = '\0'; - req->q.arch = mandoc_strdup(dir); - dir = strrchr(req->q.manpath, '/'); - } else - req->q.arch = NULL; + /* Split directory components. */ + dir[i = 0] = req->q.manpath; + while ((dir[i + 1] = strchr(dir[i], '/')) != NULL) { + if (++i == 3) { + pg_error_badrequest( + "You specified too many directory components."); + exit(EXIT_FAILURE); + } + *dir[i]++ = '\0'; + } - /* Optional directory name. */ - if (dir != NULL && strncmp(dir + 1, "man", 3) == 0) { - *dir++ = '\0'; + /* Optional manpath. */ + if ((i = validate_manpath(req, req->q.manpath)) == 0) + req->q.manpath = NULL; + else if (dir[1] == NULL) + return; + + /* Optional section. */ + if (strncmp(dir[i], "man", 3) == 0) { free(req->q.sec); - req->q.sec = mandoc_strdup(dir + 3); + req->q.sec = mandoc_strdup(dir[i++] + 3); } + if (dir[i] == NULL) { + if (req->q.manpath == NULL) + free(dir[0]); + return; + } + if (dir[i + 1] != NULL) { + pg_error_badrequest( + "You specified an invalid directory component."); + exit(EXIT_FAILURE); + } + + /* Optional architecture. */ + if (i) { + req->q.arch = mandoc_strdup(dir[i]); + if (req->q.manpath == NULL) + free(dir[0]); + } else + req->q.arch = dir[0]; } /*