#ifndef lint static char *rcsid = "$Id: filechecker.c,v 1.1 2003/06/04 00:25:52 marka Exp $"; #endif /* * Copyright (c) 2001,2002 Japan Network Information Center. * All rights reserved. * * By using this file, you agree to the terms and conditions set forth bellow. * * LICENSE TERMS AND CONDITIONS * * The following License Terms and Conditions apply, unless a different * license is obtained from Japan Network Information Center ("JPNIC"), * a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda, * Chiyoda-ku, Tokyo 101-0047, Japan. * * 1. Use, Modification and Redistribution (including distribution of any * modified or derived work) in source and/or binary forms is permitted * under this License Terms and Conditions. * * 2. Redistribution of source code must retain the copyright notices as they * appear in each source code file, this License Terms and Conditions. * * 3. Redistribution in binary form must reproduce the Copyright Notice, * this License Terms and Conditions, in the documentation and/or other * materials provided with the distribution. For the purposes of binary * distribution the "Copyright Notice" refers to the following language: * "Copyright (c) 2000-2002 Japan Network Information Center. All rights reserved." * * 4. The name of JPNIC may not be used to endorse or promote products * derived from this Software without specific prior written approval of * JPNIC. * * 5. Disclaimer/Limitation of Liability: THIS SOFTWARE IS PROVIDED BY JPNIC * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JPNIC BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. */ #include #include #include #include #include #include #include #include #include #include #include #include #define SUPPORT_VERSIONING struct idn__filechecker { idn_ucsset_t set; }; static idn_result_t read_file(const char *file, FILE *fp, idn_ucsset_t set); static int get_range(char *s, unsigned long *ucs1, unsigned long *ucs2); static char *get_ucs(char *p, unsigned long *vp); idn_result_t idn__filechecker_create(const char *file, idn__filechecker_t *ctxp) { FILE *fp; idn__filechecker_t ctx; idn_result_t r; assert(file != NULL && ctxp != NULL); TRACE(("idn__filechecker_create(file=\"%-.100s\")\n", file)); if ((fp = fopen(file, "r")) == NULL) { WARNING(("idn__filechecker_create: cannot open %-.100s\n", file)); return (idn_nofile); } if ((ctx = malloc(sizeof(struct idn__filechecker))) == NULL) return (idn_nomemory); if ((r = idn_ucsset_create(&ctx->set)) != idn_success) { free(ctx); return (r); } r = read_file(file, fp, ctx->set); fclose(fp); if (r == idn_success) { idn_ucsset_fix(ctx->set); *ctxp = ctx; } else { idn_ucsset_destroy(ctx->set); free(ctx); } return (r); } void idn__filechecker_destroy(idn__filechecker_t ctx) { assert(ctx != NULL); TRACE(("idn__filechecker_destroy()\n")); idn_ucsset_destroy(ctx->set); free(ctx); } idn_result_t idn__filechecker_lookup(idn__filechecker_t ctx, const unsigned long *str, const unsigned long **found) { idn_result_t r = idn_success; assert(ctx != NULL && str != NULL); TRACE(("idn__filechecker_lookup(str=\"%s\")\n", idn__debug_ucs4xstring(str, 50))); while (*str != '\0') { int exists; r = idn_ucsset_lookup(ctx->set, *str, &exists); if (r != idn_success) { return (r); } else if (exists) { /* Found. */ *found = str; return (idn_success); } str++; } *found = NULL; return (idn_success); } static idn_result_t read_file(const char *file, FILE *fp, idn_ucsset_t set) { char line[256]; idn_result_t r; int lineno = 0; while (fgets(line, sizeof(line), fp) != NULL) { char *p = line; unsigned long ucs1, ucs2; lineno++; while (isspace((unsigned char)*p)) p++; if (*p == '\0' || *p == '#') continue; #ifdef SUPPORT_VERSIONING /* Skip version tag. */ if (lineno == 1 && strncmp("version=", line, 8) == 0) continue; #endif if (!get_range(p, &ucs1, &ucs2)) { WARNING(("syntax error in file \"%-.100s\" line %d: " "%-.100s", file, lineno, line)); return (idn_invalid_syntax); } if ((r = idn_ucsset_addrange(set, ucs1, ucs2)) != idn_success) return (r); } return (idn_success); } static int get_range(char *s, unsigned long *ucs1, unsigned long *ucs2) { if ((s = get_ucs(s, ucs1)) == NULL) return (0); *ucs2 = *ucs1; switch (s[0]) { case '\0': case '\n': case '#': case ';': return (1); case '-': break; default: return (0); } if ((s = get_ucs(s + 1, ucs2)) == NULL) return (0); if (*ucs1 > *ucs2) { INFO(("idn__filechecker_create: invalid range spec " "U+%X-U+%X\n", *ucs1, *ucs2)); return (0); } switch (s[0]) { case '\0': case '\n': case '#': case ';': return (1); default: return (0); } } static char * get_ucs(char *p, unsigned long *vp) { char *end; /* Skip leading space */ while (isspace((unsigned char)*p)) p++; /* Skip optional 'U+' */ if (strncmp(p, "U+", 2) == 0) p += 2; *vp = strtoul(p, &end, 16); if (end == p) { INFO(("idn__filechecker_create: UCS code point expected\n")); return (NULL); } p = end; /* Skip trailing space */ while (isspace((unsigned char)*p)) p++; return p; } idn_result_t idn__filechecker_createproc(const char *parameter, void **ctxp) { return idn__filechecker_create(parameter, (idn__filechecker_t *)ctxp); } void idn__filechecker_destroyproc(void *ctxp) { idn__filechecker_destroy((idn__filechecker_t)ctxp); } idn_result_t idn__filechecker_lookupproc(void *ctx, const unsigned long *str, const unsigned long **found) { return idn__filechecker_lookup((idn__filechecker_t)ctx, str, found); }