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Change-Id: I6a4444e3c193dae437cd7929f4c39aba7b749efa
diff --git a/extensions/app_radgw/rgw_conf.l b/extensions/app_radgw/rgw_conf.l
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+/*********************************************************************************************************
+* Software License Agreement (BSD License) *
+* Author: Sebastien Decugis <sdecugis@freediameter.net> *
+* *
+* Copyright (c) 2013, WIDE Project and NICT *
+* All rights reserved. *
+* *
+* Redistribution and use of this software in source and binary forms, with or without modification, are *
+* permitted provided that the following conditions are met: *
+* *
+* * Redistributions of source code must retain the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer. *
+* *
+* * Redistributions in binary form must reproduce the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer in the documentation and/or other *
+* materials provided with the distribution. *
+* *
+* * Neither the name of the WIDE Project or NICT nor the *
+* names of its contributors may be used to endorse or *
+* promote products derived from this software without *
+* specific prior written permission of WIDE Project and *
+* NICT. *
+* *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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 DAMAGE. *
+*********************************************************************************************************/
+/* Lex configuration parser for radius_gw extension.
+ *
+ */
+
+%{
+#include "rgw.h"
+#include "rgw_conf.tab.h"
+
+/* Update the column information */
+#define YY_USER_ACTION { \
+ yylloc->first_column = yylloc->last_column + 1; \
+ yylloc->last_column = yylloc->first_column + yyleng - 1; \
+}
+
+/* %option noinput ? */
+#define YY_NO_INPUT
+%}
+
+%option bison-bridge bison-locations
+%option noyywrap
+%option nounput
+
+/* Use the following start condition to parse an URI */
+%x IN_PLG
+%x IN_CLI1
+%x IN_CLI2
+%x EXPECT_IP4
+%x EXPECT_IP6
+%x EXPECT_DECINT
+
+/* Quoted string. Multilines do not match. */
+qstring \"[^\"\n]*\"
+
+/* Used to match IP, IP6, and port */
+IP4 [0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}
+IP6 [[:xdigit:]]*:[[:xdigit:]]*:[[:xdigit:].:]*
+BR_PORT [[][0-9]+[]]
+
+
+%%
+
+ /* All sections */
+<*>\n {
+ /* Update the line count */
+ yylloc->first_line++;
+ yylloc->last_line++;
+ yylloc->last_column=0;
+ }
+
+<*>([[:space:]]{-}[\n])+ ; /* Eat all spaces, not new lines */
+<*>#.*$ ; /* Eat all comments */
+
+<*>{qstring} {
+ /* First copy the string without the quotes for use in the yacc parser */
+ yylval->string = strdup(yytext+1);
+ if (yylval->string == NULL) {
+ fd_log_debug("Unable to allocate memory: %s", strerror(errno));
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+
+ yylval->string[yyleng-2] = '\0';
+
+ /* the yacc parser will check the string is valid */
+ return QSTRING;
+ }
+
+
+ /* Extension section */
+(?i:"RGWX") { BEGIN(IN_PLG); return PLG_PREFIX; }
+
+<IN_PLG>(?i:"auth") { return AUTH; }
+<IN_PLG>(?i:"acct") { return ACCT; }
+
+<IN_PLG,IN_CLI2>[[:xdigit:]]+ {
+ /* Convert this to an integer value */
+ int ret = sscanf(yytext, "%x", &yylval->integer);
+ if (ret != 1) {
+ /* No matching: an error occurred */
+ fd_log_debug("Unable to convert the value '%s' to a valid number: %s", yytext, strerror(errno));
+ return LEX_ERROR; /* trig an error in yacc parser */
+ /* Maybe we could REJECT instead of failing here? */
+ }
+ return INTEGER;
+ }
+
+<IN_PLG>[:] { return yytext[0]; }
+
+
+ /* Client section */
+(?i:"nas"|"cli") { BEGIN(IN_CLI1); yylval->integer=RGW_CLI_NAS; return NAS_OR_PXY; }
+(?i:"pxy") { BEGIN(IN_CLI1); yylval->integer=RGW_CLI_PXY; return NAS_OR_PXY; }
+
+ /* Match an IP (4 or 6) and optional port */
+<IN_CLI1>({IP4}|{IP6}){BR_PORT}? {
+ char * work;
+ char * port;
+ unsigned short p = 0;
+
+ work = strdup(yytext);
+ if ( work == NULL ) {
+ fd_log_debug("Unable to allocate memory: %s", strerror(errno));
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+
+ if ((port = strchr(work, '[')) != NULL) {
+ *port = '\0';
+ port++;
+ if (sscanf(port, "%hu]", &p) != 1) {
+ fd_log_debug("'%s' is not a valid port: %s", port, strerror(errno));
+ free(work);
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+ }
+
+ /* Do we have an IP or IPv6? Let's check if we have ':' char somewhere in the beginning */
+ if (memchr(work, ':', 5) != NULL) {
+ struct sockaddr_in6 * sin6 = NULL;
+
+ sin6 = malloc(sizeof(struct sockaddr_in6));
+ if (sin6 == NULL) {
+ fd_log_debug("Unable to allocate memory: %s", strerror(errno));
+ free(work);
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+
+ memset(sin6, 0, sizeof(struct sockaddr_in6));
+ sin6->sin6_family = AF_INET6;
+ if (inet_pton(AF_INET6, work, &sin6->sin6_addr) != 1) {
+ fd_log_debug("'%s' is not a valid IPv6 address: %s", work, strerror(errno));
+ free(work);
+ free(sin6);
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+ sin6->sin6_port = htons(p);
+ yylval->ss = (struct sockaddr *)sin6;
+ } else {
+ struct sockaddr_in * sin = NULL;
+
+ sin = malloc(sizeof(struct sockaddr_in));
+ if (sin == NULL) {
+ fd_log_debug("Unable to allocate memory: %s", strerror(errno));
+ free(work);
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+
+ memset(sin, 0, sizeof(struct sockaddr_in));
+ sin->sin_family = AF_INET;
+ if (inet_pton(AF_INET, work, &sin->sin_addr) != 1) {
+ fd_log_debug("'%s' is not a valid IP address: %s", work, strerror(errno));
+ free(work);
+ free(sin);
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+
+ sin->sin_port = htons(p);
+ yylval->ss = (struct sockaddr *)sin;
+ }
+ free(work);
+ return IP;
+ }
+
+
+<IN_CLI1>"/" { BEGIN(IN_CLI2); return '/'; }
+
+
+ /* Servers section */
+(?i:"auth_server_enable") { BEGIN(EXPECT_DECINT); return AUTH_ENABLE; }
+(?i:"auth_server_port") { BEGIN(EXPECT_DECINT); return AUTH_PORT; }
+(?i:"auth_server_ip4") { BEGIN(EXPECT_IP4); return AUTH_IP4; }
+(?i:"auth_server_ip6") { BEGIN(EXPECT_IP6); return AUTH_IP6; }
+(?i:"acct_server_enable") { BEGIN(EXPECT_DECINT); return ACCT_ENABLE; }
+(?i:"acct_server_port") { BEGIN(EXPECT_DECINT); return ACCT_PORT; }
+(?i:"acct_server_ip4") { BEGIN(EXPECT_IP4); return ACCT_IP4; }
+(?i:"acct_server_ip6") { BEGIN(EXPECT_IP6); return ACCT_IP6; }
+
+<EXPECT_DECINT>[[:digit:]]+ {
+ /* Match an integer (not hexa) */
+ int ret = sscanf(yytext, "%d", &yylval->integer);
+ if (ret != 1) {
+ /* No matching: an error occurred */
+ fd_log_debug("Unable to convert the value '%s' to a valid number: %s", yytext, strerror(errno));
+ return LEX_ERROR; /* trig an error in yacc parser */
+ /* Maybe we could REJECT instead of failing here? */
+ }
+ return INTEGER;
+ }
+
+<EXPECT_IP4,EXPECT_IP6>(?i:"disable") { return DISABLED; }
+
+<EXPECT_IP4>{IP4} {
+ struct sockaddr_in * sin = NULL;
+
+ sin = malloc(sizeof(struct sockaddr_in));
+ if (sin == NULL) {
+ fd_log_debug("Unable to allocate memory: %s", strerror(errno));
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+
+ memset(sin, 0, sizeof(struct sockaddr_in));
+ sin->sin_family = AF_INET;
+ if (inet_pton(AF_INET, yytext, &sin->sin_addr) != 1) {
+ fd_log_debug("'%s' is not a valid IP address: %s", yytext, strerror(errno));
+ free(sin);
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+ yylval->ss = (struct sockaddr *)sin;
+ return IP;
+ }
+
+<EXPECT_IP6>{IP6} {
+ struct sockaddr_in6 * sin6 = NULL;
+
+ sin6 = malloc(sizeof(struct sockaddr_in6));
+ if (sin6 == NULL) {
+ fd_log_debug("Unable to allocate memory: %s", strerror(errno));
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+
+ memset(sin6, 0, sizeof(struct sockaddr_in6));
+ sin6->sin6_family = AF_INET6;
+ if (inet_pton(AF_INET6, yytext, &sin6->sin6_addr) != 1) {
+ fd_log_debug("'%s' is not a valid IPv6 address: %s", yytext, strerror(errno));
+ free(sin6);
+ return LEX_ERROR; /* trig an error in yacc parser */
+ }
+ yylval->ss = (struct sockaddr *)sin6;
+ return IP;
+ }
+
+
+ /* Valid single characters for yyparse in all contexts */
+<*>[=] { return yytext[0]; }
+<*>[;] { BEGIN(INITIAL); return yytext[0]; }
+
+ /* Unrecognized token */
+<*>[[:alnum:]]+ | /* This rule is only useful to print a complete token in error messages */
+ /* Unrecognized character */
+<*>. {
+ fd_log_debug("Unrecognized text on line %d col %d: '%s'.", yylloc->first_line, yylloc->first_column, yytext);
+ return LEX_ERROR;
+ }
+
+%%