make upload directory if it doesn't exist

Signed-off-by: Michael Krelin <hacker@klever.net>

2 files changed, 16 insertions, 1 deletions

diff --git a/src/eyefiservice.cc b/src/eyefiservice.cc
index 30c06fa..97cb33b 100644
--- a/src/eyefiservice.cc
+++ b/src/eyefiservice.cc
@@ -1,186 +1,185 @@
 #include <cassert>
 #include <iostream>
 #include <fstream>
 #include <stdexcept>
 #include <iterator>
 #include <syslog.h>
 #include <sys/wait.h>
 #include <autosprintf.h>
 #include "eyekinfig.h"
 #include "eyetil.h"
 #include "soapeyefiService.h"
 
 static bool detached_child() {
     pid_t p = fork();
     if(p<0) throw std::runtime_error("failed to fork()");
     if(!p) {
 	p = fork();
 	if(p<0) {
 	    syslog(LOG_ERR,"Failed to re-fork child process");
 	    _exit(-1);
 	}
 	if(!p) {
 	    setsid();
 	    for(int i=getdtablesize();i>=0;--i) close(i);
 	    int i=open("/dev/null",O_RDWR); assert(i==0);
 	    i = dup(i); assert(i==1);
 	    i = dup(i); assert(i==2);
 	    return true;
 	}
 	_exit(0);
     }
     int rc;
     if(waitpid(p,&rc,0)<0) throw std::runtime_error("failed to waitpid()");
     if(!WIFEXITED(rc)) throw std::runtime_error("error in forked process");
     if(WEXITSTATUS(rc)) throw std::runtime_error("forked process signalled error");
     return false;
 }
 
 int eyefiService::StartSession(
 	std::string macaddress,std::string cnonce,
 	int transfermode,long transfermodetimestamp,
 	struct rns__StartSessionResponse &r ) {
 #ifndef NDEBUG
     syslog(LOG_DEBUG,
 	    "StartSession request from %s with cnonce=%s, transfermode=%d, transfermodetimestamp=%ld",
 	    macaddress.c_str(), cnonce.c_str(), transfermode, transfermodetimestamp );
 #endif
     r.credential = binary_t(macaddress+cnonce+eyekinfig_t(macaddress).get_upload_key()).md5().hex();
     /* TODO: better nonce generator */
     time_t t = time(0);
     r.snonce = binary_t(&t,sizeof(t)).md5().hex();
     r.transfermode=2;
     r.transfermodetimestamp=t;
     r.upsyncallowed=false;
 
     std::string cmd = eyekinfig_t(macaddress).get_on_start_session();
     if(!cmd.empty()) {
 	if(detached_child()) {
 	    putenv( gnu::autosprintf("EYEFI_MACADDRESS=%s",macaddress.c_str()) );
 	    putenv( gnu::autosprintf("EYEFI_TRANSFERMODE=%d",transfermode) );
 	    putenv( gnu::autosprintf("EYEFI_TRANSFERMODETIMESTAMP=%ld",transfermodetimestamp) );
 	    char *argv[] = { (char*)"/bin/sh", (char*)"-c", (char*)cmd.c_str(), 0 };
 	    execv("/bin/sh",argv);
 	    syslog(LOG_ERR,"Failed to execute '%s'",cmd.c_str());
 	    _exit(-1);
 	}
     }
     return SOAP_OK;
 }
 
 int eyefiService::GetPhotoStatus(
 	std::string credential, std::string macaddress,
 	std::string filename, long filesize, std::string filesignature,
 	struct rns__GetPhotoStatusResponse &r ) {
 #ifndef NDEBUG
     syslog(LOG_DEBUG,
 	    "GetPhotoStatus request from %s with credential=%s, filename=%s, filesize=%ld, filesignature=%s",
 	    macaddress.c_str(), credential.c_str(), filename.c_str(), filesize, filesignature.c_str() );
 #endif
     r.fileid = 1; r.offset = 0;
     return SOAP_OK;
 }
 
 int eyefiService::MarkLastPhotoInRoll(
 	std::string macaddress, int mergedelta,
 	struct rns__MarkLastPhotoInRollResponse &r ) {
 #ifndef NDEBUG
     syslog(LOG_DEBUG,
 	    "MarkLastPhotoInRoll request from %s with mergedelta=%d",
 	    macaddress.c_str(), mergedelta );
 #endif
     std::string cmd = eyekinfig_t(macaddress).get_on_mark_last_photo_in_roll();
     if(!cmd.empty()) {
 	if(detached_child()) {
 	    putenv( gnu::autosprintf("EYEFI_MACADDRESS=%s",macaddress.c_str()) );
 	    putenv( gnu::autosprintf("EYEFI_MERGEDELTA=%d",mergedelta) );
 	    char *argv[] = { (char*)"/bin/sh", (char*)"-c", (char*)cmd.c_str(), 0 };
 	    execv("/bin/sh",argv);
 	    syslog(LOG_ERR,"Failed to execute '%s'",cmd.c_str());
 	    _exit(-1);
 	}
     }
     return SOAP_OK;
 }
 
 int eyefiService::UploadPhoto(
 	int fileid, std::string macaddress,
 	std::string filename, long filesize, std::string filesignature,
 	std::string encryption, int flags,
 	struct rns__UploadPhotoResponse& r ) {
 #ifndef NDEBUG
     syslog(LOG_DEBUG,
 	    "UploadPhoto request from %s with fileid=%d, filename=%s, filesize=%ld,"
 	    " filesignature=%s, encryption=%s, flags=%04X",
 	    macaddress.c_str(), fileid, filename.c_str(), filesize,
 	    filesignature.c_str(), encryption.c_str(), flags );
 #endif
     eyekinfig_t eyekinfig(macaddress);
 
     umask(eyekinfig.get_umask());
 
     std::string td = eyekinfig.get_targetdir();
-    /* TODO: try to create, if needed */
     tmpdir_t indir(td+"/.incoming.XXXXXX");
 
     for(soap_multipart::iterator i=mime.begin(),ie=mime.end();i!=ie;++i) {
 #ifndef NDEBUG
 	syslog(LOG_DEBUG,
 		" MIME attachment with id=%s, type=%s, size=%ld",
 		(*i).id, (*i).type, (long)(*i).size );
 #endif
 
 #ifndef NDEBUG
 	if((*i).id && !strcmp((*i).id,"INTEGRITYDIGEST")) {
 	    std::string idigest((*i).ptr,(*i).size);
 	    syslog(LOG_DEBUG, " INTEGRITYDIGEST=%s", idigest.c_str());
 	}
 #endif
 	if( (*i).id && !strcmp((*i).id,"FILENAME") ) {
 	    assert( (*i).type && !strcmp((*i).type,"application/x-tar") );
 #ifdef III_SAVE_TARS
 	    std::string tarfile = indir.get_file(filename);
 	    {
 		std::ofstream(tarfile.c_str(),std::ios::out|std::ios::binary).write((*i).ptr,(*i).size);
 	    }
 #endif
 	    tarchive_t a((*i).ptr,(*i).size);
 	    if(!a.read_next_header())
 		throw std::runtime_error("failed to tarchive_t::read_next_header())");
 	    std::string jf = indir.get_file(a.entry_pathname());
 	    std::string::size_type ls = jf.rfind('/');
 	    std::string jbn = (ls==std::string::npos)?jf:jf.substr(ls+1);
 	    int fd=open(jf.c_str(),O_CREAT|O_WRONLY,0666);
 	    assert(fd>0);
 	    a.read_data_into_fd(fd);
 	    close(fd);
 	    std::string tf = td+'/'+jbn;
 	    bool success = false;
 	    if(!link(jf.c_str(), tf.c_str())) {
 		unlink(jf.c_str()); success = true;
 	    }else{
 		for(int i=1;i<32767;++i) {
 		    tf = (const char*)gnu::autosprintf( "%s/(%05d)%s",
 			    td.c_str(), i, jbn.c_str() );
 		    if(!link(jf.c_str(), tf.c_str())) {
 			unlink(jf.c_str()); success = true;
 			break;
 		    }
 		}
 	    }
 	    std::string cmd = eyekinfig.get_on_upload_photo();
 	    if(success && !cmd.empty()) {
 		if(detached_child()) {
 		    putenv( gnu::autosprintf("EYEFI_MACADDRESS=%s",macaddress.c_str()) );
 		    putenv( gnu::autosprintf("EYEFI_UPLOADED=%s",tf.c_str()) );
 		    char *argv[] = { (char*)"/bin/sh", (char*)"-c", (char*)cmd.c_str(), 0 };
 		    execv("/bin/sh",argv);
 		    syslog(LOG_ERR,"Failed to execute '%s'",cmd.c_str());
 		    _exit(-1);
 		}
 	    }
 	}
     }
     r.success = true;
     return SOAP_OK;
 }
diff --git a/src/eyetil.cc b/src/eyetil.cc
index d00c2ee..2fbd687 100644
--- a/src/eyetil.cc
+++ b/src/eyetil.cc
@@ -1,103 +1,119 @@
 #include <stdlib.h>
+#include <sys/stat.h>
 #include <syslog.h>
 #include <iostream>
 #include <cassert>
 #include <stdexcept>
 #include <openssl/md5.h>
 #include "eyetil.h"
 
 binary_t& binary_t::from_hex(const std::string& h) {
     /* TODO: algorithmize */
     std::string::size_type hs = h.length();
     if(hs&1)
 	throw std::runtime_error("odd number of characters in hexadecimal number");
     int rvs = hs>>1;
     resize(rvs);
     const unsigned char *hp = (const unsigned char*)h.data();
     iterator oi=begin();
     char t[3] = { 0,0,0 };
     for(int i=0;i<rvs;++i) {
 	t[0]=*(hp++); t[1]=*(hp++);
 	*(oi++) = strtol(t,0,16);
     }
     return *this;
 }
 
 binary_t& binary_t::from_data(const void *d,size_t s) {
     resize(s);
     std::copy((const unsigned char*)d,(const unsigned char *)d+s,
 	    begin() );
     return *this;
 }
 
 std::string binary_t::hex() const {
     std::string rv;
     rv.reserve((size()<<1)+1);
     char t[3] = {0,0,0};
     for(const_iterator i=begin(),ie=end();i!=ie;++i) {
 	int rc = snprintf(t,sizeof(t),"%02x",*i);
 	assert(rc<sizeof(t));
 	rv += t;
     }
     return rv;
 }
 
 binary_t binary_t::md5() const {
     binary_t rv(MD5_DIGEST_LENGTH);
     if(!MD5(
 		(const unsigned char*)&(front()),size(),
 		(unsigned char*)&(rv.front()) ))
 	throw std::runtime_error("failed to md5()");
     return rv;
 }
 
+static void make_path_for_template(const std::string& p,mode_t m) {
+    struct stat st;
+    std::string pp;
+    for(std::string::size_type sl=p.find('/',1);
+	    sl!=std::string::npos;
+	    sl=p.find('/',sl+1)) {
+	if(stat( (pp=p.substr(0,sl)).c_str() ,&st)
+		|| !S_ISDIR(st.st_mode)) {
+	    if(mkdir(pp.c_str(),m))
+		throw std::runtime_error("failed to mkdir()");
+	}
+    }
+}
+
 tmpdir_t::tmpdir_t(const std::string& dt) : dir(dt) {
+    make_path_for_template(dt,0777);
     if(!mkdtemp((char*)dir.data()))
 	throw std::runtime_error("failed to mkdtmp()");
 }
 tmpdir_t::~tmpdir_t() {
     assert(!dir.empty());
     if(rmdir(dir.c_str())) {
 	syslog(LOG_WARNING,"Failed to remove '%s' directory",dir.c_str());
     }
 }
 
 std::string tmpdir_t::get_file(const std::string& f) {
     std::string::size_type ls = f.rfind('/');
     return dir+'/'+(
 	    (ls==std::string::npos)
 	    ? f
 	    : f.substr(ls+1)
 	);
 }
 
 tarchive_t::tarchive_t(void *p,size_t s) : a(archive_read_new()), e(0) {
     if(!a) throw std::runtime_error("failed to archive_read_new()");
     if(archive_read_support_format_tar(a)) {
 	archive_read_finish(a);
 	throw std::runtime_error("failed to archive_read_support_format_tar()");
     }
     if(archive_read_open_memory(a,p,s)) {
 	archive_read_finish(a);
 	throw std::runtime_error("failed to archive_read_open_memory()");
     }
 }
 tarchive_t::~tarchive_t() {
     assert(a);
     archive_read_finish(a);
 }
 
 bool tarchive_t::read_next_header() {
     assert(a);
     return archive_read_next_header(a,&e)==ARCHIVE_OK;
 }
 
 std::string tarchive_t::entry_pathname() {
     assert(a); assert(e);
     return archive_entry_pathname(e);
 }
 
 bool tarchive_t::read_data_into_fd(int fd) {
     assert(a);
     return archive_read_data_into_fd(a,fd)==ARCHIVE_OK;
 }