251 lines
6.6 KiB
C
251 lines
6.6 KiB
C
#include "sysinstall.h"
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/param.h>
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#include <netdb.h>
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extern const char *ftp_dirs[]; /* defined in ftp.c */
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Boolean
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checkAccess(Boolean proxyCheckOnly)
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{
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/*
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* Some proxies fetch files with certain extensions in "ascii mode" instead
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* of "binary mode" for FTP. The FTP server then translates all LF to CRLF.
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*
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* You can force Squid to use binary mode by appending ";type=i" to the URL,
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* which is what I do here. For other proxies, the LF->CRLF substitution
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* is reverted in distExtract().
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*/
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int rv, s, af;
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bool el, found=FALSE; /* end of header line */
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char *cp, buf[PATH_MAX], req[BUFSIZ];
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struct addrinfo hints, *res, *res0;
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af = variable_cmp(VAR_IPV6_ENABLE, "YES") ? AF_INET : AF_UNSPEC;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = af;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = 0;
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if ((rv = getaddrinfo(variable_get(VAR_HTTP_HOST),
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variable_get(VAR_HTTP_PORT), &hints, &res0)) != 0) {
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msgConfirm("%s", gai_strerror(rv));
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variable_unset(VAR_HTTP_HOST);
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return FALSE;
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}
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s = -1;
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for (res = res0; res; res = res->ai_next) {
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if ((s = socket(res->ai_family, res->ai_socktype,
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res->ai_protocol)) < 0)
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continue;
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if (connect(s, res->ai_addr, res->ai_addrlen) >= 0)
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break;
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close(s);
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s = -1;
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}
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freeaddrinfo(res0);
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if (s == -1) {
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msgConfirm("Couldn't connect to proxy %s:%s",
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variable_get(VAR_HTTP_HOST),variable_get(VAR_HTTP_PORT));
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variable_unset(VAR_HTTP_HOST);
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return FALSE;
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}
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if (proxyCheckOnly) {
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close(s);
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return TRUE;
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}
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msgNotify("Checking access to\n %s", variable_get(VAR_HTTP_PATH));
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sprintf(req,"HEAD %s/ HTTP/1.0\r\n\r\n", variable_get(VAR_HTTP_PATH));
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write(s,req,strlen(req));
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/*
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* scan the headers of the response
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* this is extremely quick'n dirty
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*
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*/
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bzero(buf, PATH_MAX);
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cp=buf;
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el=FALSE;
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rv=read(s,cp,1);
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variable_set2(VAR_HTTP_FTP_MODE,"",0);
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while (rv>0) {
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if ((*cp == '\012') && el) {
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/* reached end of a header line */
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if (!strncmp(buf,"HTTP",4)) {
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if (strtol((char *)(buf+9),0,0) == 200) {
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found = TRUE;
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}
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}
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if (!strncmp(buf,"Server: ",8)) {
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if (!strncmp(buf,"Server: Squid",13)) {
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variable_set2(VAR_HTTP_FTP_MODE,";type=i",0);
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} else {
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variable_set2(VAR_HTTP_FTP_MODE,"",0);
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}
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}
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/* ignore other headers */
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/* check for "\015\012" at beginning of line, i.e. end of headers */
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if ((cp-buf) == 1)
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break;
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cp=buf;
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rv=read(s,cp,1);
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} else {
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el=FALSE;
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if (*cp == '\015')
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el=TRUE;
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cp++;
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rv=read(s,cp,1);
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}
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}
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close(s);
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return found;
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}
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Boolean
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mediaInitHTTP(Device *dev)
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{
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bool found=FALSE; /* end of header line */
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char *rel, req[BUFSIZ];
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int fdir;
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/*
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* First verify the proxy access
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*/
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checkAccess(TRUE);
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while (variable_get(VAR_HTTP_HOST) == NULL) {
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if (DITEM_STATUS(mediaSetHTTP(NULL)) == DITEM_FAILURE)
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return FALSE;
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checkAccess(TRUE);
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}
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again:
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/* If the release is specified as "__RELEASE" or "any", then just
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* assume that the path the user gave is ok.
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*/
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rel = variable_get(VAR_RELNAME);
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/*
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msgConfirm("rel: -%s-", rel);
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*/
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if (strcmp(rel, "__RELEASE") && strcmp(rel, "any")) {
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for (fdir = 0; ftp_dirs[fdir]; fdir++) {
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sprintf(req, "%s/%s/%s", variable_get(VAR_FTP_PATH),
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ftp_dirs[fdir], rel);
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variable_set2(VAR_HTTP_PATH, req, 0);
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if (checkAccess(FALSE)) {
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found = TRUE;
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break;
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}
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}
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} else {
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variable_set2(VAR_HTTP_PATH, variable_get(VAR_FTP_PATH), 0);
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found = checkAccess(FALSE);
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}
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if (!found) {
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msgConfirm("No such directory: %s\n"
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"please check the URL and try again.", variable_get(VAR_HTTP_PATH));
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variable_unset(VAR_HTTP_PATH);
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dialog_clear_norefresh();
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clear();
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if (DITEM_STATUS(mediaSetHTTP(NULL)) != DITEM_FAILURE) goto again;
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}
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return found;
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}
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FILE *
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mediaGetHTTP(Device *dev, char *file, Boolean probe)
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{
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FILE *fp;
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int rv, s, af;
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bool el; /* end of header line */
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char *cp, buf[PATH_MAX], req[BUFSIZ];
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struct addrinfo hints, *res, *res0;
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af = variable_cmp(VAR_IPV6_ENABLE, "YES") ? AF_INET : AF_UNSPEC;
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memset(&hints, 0, sizeof(hints));
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hints.ai_family = af;
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_protocol = 0;
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if ((rv = getaddrinfo(variable_get(VAR_HTTP_HOST),
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variable_get(VAR_HTTP_PORT), &hints, &res0)) != 0) {
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msgConfirm("%s", gai_strerror(rv));
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return NULL;
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}
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s = -1;
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for (res = res0; res; res = res->ai_next) {
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if ((s = socket(res->ai_family, res->ai_socktype,
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res->ai_protocol)) < 0)
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continue;
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if (connect(s, res->ai_addr, res->ai_addrlen) >= 0)
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break;
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close(s);
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s = -1;
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}
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freeaddrinfo(res0);
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if (s == -1) {
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msgConfirm("Couldn't connect to proxy %s:%s",
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variable_get(VAR_HTTP_HOST),variable_get(VAR_HTTP_PORT));
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return NULL;
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}
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sprintf(req,"GET %s/%s%s HTTP/1.0\r\n\r\n",
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variable_get(VAR_HTTP_PATH), file, variable_get(VAR_HTTP_FTP_MODE));
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if (isDebug()) {
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msgDebug("sending http request: %s",req);
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}
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write(s,req,strlen(req));
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/*
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* scan the headers of the response
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* this is extremely quick'n dirty
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*
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*/
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cp=buf;
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el=FALSE;
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rv=read(s,cp,1);
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while (rv>0) {
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if ((*cp == '\012') && el) {
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/* reached end of a header line */
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if (!strncmp(buf,"HTTP",4)) {
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rv=strtol((char *)(buf+9),0,0);
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*(cp-1)='\0'; /* chop the CRLF off */
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if (probe && (rv != 200)) {
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return NULL;
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} else if (rv >= 500) {
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msgConfirm("Server error %s when sending %s, you could try an other server",buf, req);
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return NULL;
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} else if (rv == 404) {
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msgConfirm("%s was not found, maybe directory or release-version are wrong?",req);
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return NULL;
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} else if (rv >= 400) {
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msgConfirm("Client error %s, you could try an other server",buf);
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return NULL;
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} else if (rv >= 300) {
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msgConfirm("Error %s,",buf);
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return NULL;
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} else if (rv != 200) {
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msgConfirm("Error %s when sending %s, you could try an other server",buf, req);
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return NULL;
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}
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}
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/* ignore other headers */
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/* check for "\015\012" at beginning of line, i.e. end of headers */
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if ((cp-buf) == 1)
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break;
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cp=buf;
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rv=read(s,cp,1);
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} else {
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el=FALSE;
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if (*cp == '\015')
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el=TRUE;
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cp++;
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rv=read(s,cp,1);
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}
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}
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fp=fdopen(s,"r");
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return fp;
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}
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