added persistent store for photo status

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

1 files changed, 73 insertions, 4 deletions

diff --git a/src/eyefiservice.cc b/src/eyefiservice.cc
index 93bbcca..4a4a179 100644
--- a/src/eyefiservice.cc
+++ b/src/eyefiservice.cc
@@ -5,18 +5,35 @@
 #include <iterator>
 #include <algorithm>
 #include <syslog.h>
 #include <sys/wait.h>
 #include <autosprintf.h>
 #include "eyekinfig.h"
 #include "eyetil.h"
 #include "soapeyefiService.h"
+#ifdef HAVE_SQLITE
+# include "iiidb.h"
+#endif
 
 static binary_t session_nonce;
+#ifdef HAVE_SQLITE
+    static struct {
+        std::string filesignature;
+        long filesize;
+        std::string filename;
+        inline void reset() { filesignature.erase(); filename.erase(); filesize=0; }
+        inline void set(const std::string n,const std::string sig,long siz) {
+            filename = n; filesignature = sig; filesize = siz;
+        }
+        inline bool is(const std::string n,const std::string sig,long siz) {
+            return filesize==siz && filename==n && filesignature==sig;
+        }
+    }   already;
+#endif /* HAVE_SQLITE */
 
 static bool detached_child() {
     pid_t p = fork();
     if(p<0) {
         syslog(LOG_ERR,"Failed to fork away for hook execution");
         _exit(-1);
     }
     if(!p) {
@@ -71,25 +88,44 @@ int eyefiService::GetPhotoStatus(
         std::string filename, long filesize, std::string filesignature,
         int flags,
         struct rns__GetPhotoStatusResponse &r ) try {
     syslog(LOG_INFO,
             "GetPhotoStatus request from %s with credential=%s, filename=%s, filesize=%ld, filesignature=%s, flags=%d; session nonce=%s",
             macaddress.c_str(), credential.c_str(), filename.c_str(), filesize, filesignature.c_str(), flags,
             session_nonce.hex().c_str() );
 
-    std::string computed_credential = binary_t(macaddress+eyekinfig_t(macaddress).get_upload_key()+session_nonce.hex()).md5().hex();
+    eyekinfig_t eyekinfig(macaddress);
+    std::string computed_credential = binary_t(macaddress+eyekinfig.get_upload_key()+session_nonce.hex()).md5().hex();
 
 #ifndef NDEBUG
     syslog(LOG_DEBUG, " computed credential=%s", computed_credential.c_str());
 #endif
 
     if (credential != computed_credential) throw std::runtime_error("card authentication failed");
 
-    r.fileid = 1; r.offset = 0;
+#ifdef HAVE_SQLITE
+    iiidb_t D(eyekinfig);
+    seclude::stmt_t S = D.prepare(
+            "SELECT fileid FROM photo"
+            " WHERE mac=:mac AND filename=:filename"
+            "  AND filesize=:filesize AND filesignature=:filesignature"
+    ).bind(":mac",macaddress)
+     .bind(":filename",filename).bind(":filesize",filesize)
+     .bind(":filesignature",filesignature);
+    if(!S.step()) {
+        r.fileid = 1; r.offset = 0;
+    }else{
+        r.fileid = S.column<long>(0);
+        r.offset = filesize;
+        already.set(filename,filesignature,filesize);
+    }
+#else /* HAVE_SQLITE */
+    r.fileid=1, r.offset=0;
+#endif /* HAVE_SQLITE */
     return SOAP_OK;
 }catch(const std::exception& e) { return E(this,"GetPhotoStatus",e); }
 
 int eyefiService::MarkLastPhotoInRoll(
         std::string macaddress, int mergedelta,
         struct rns__MarkLastPhotoInRollResponse&/* r */ ) try {
     syslog(LOG_INFO,
             "MarkLastPhotoInRoll request from %s with mergedelta=%d",
@@ -129,16 +165,19 @@ int eyefiService::UploadPhoto(
 
     umask(eyekinfig.get_umask());
 
     std::string td = eyekinfig.get_targetdir();
     tmpdir_t indir(td+"/.incoming.XXXXXX");
 
     std::string tf,lf;
     binary_t digest, idigest;
+#ifdef HAVE_SQLITE
+    bool beenthere = false;
+#endif
 
     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
 
@@ -159,16 +198,23 @@ int eyefiService::UploadPhoto(
 #endif
 
             if(!tf.empty()) throw std::runtime_error("already seen tarball");
             if(!digest.empty()) throw std::runtime_error("already have integrity digest");
             digest = integrity_digest((*i).ptr,(*i).size,eyekinfig.get_upload_key());
 #ifndef NDEBUG
             syslog(LOG_DEBUG," computed integrity digest=%s", digest.hex().c_str());
 #endif
+#ifdef HAVE_SQLITE
+            if(!(*i).size) {
+                if(!already.is(filename,filesignature,filesize))
+                    throw std::runtime_error("got zero-length upload for unknown file");
+                beenthere = true; continue;
+            }
+#endif
 
             tarchive_t a((*i).ptr,(*i).size);
             while(a.read_next_header()) {
                 std::string ep = a.entry_pathname(), f = indir.get_file(ep);
                 if(ep==the_file) tf = f;
                 else if(ep==the_log) lf = f;
                 else continue;
                 int fd=open(f.c_str(),O_CREAT|O_WRONLY,0666);
@@ -176,16 +222,23 @@ int eyefiService::UploadPhoto(
                     throw std::runtime_error(gnu::autosprintf("failed to create output file '%s'",f.c_str()));
                 if(!a.read_data_into_fd(fd))
                     throw std::runtime_error(gnu::autosprintf("failed to untar file into '%s'",f.c_str()));
                 close(fd);
             }
         }
     }
 
+#ifdef HAVE_SQLITE
+    if(beenthere) {
+        r.success=true;
+        return SOAP_OK;
+    }
+#endif
+
     if(tf.empty()) throw std::runtime_error("haven't seen THE file");
     if(digest!=idigest) throw std::runtime_error("integrity digest verification failed");
 
     std::string::size_type ls = tf.rfind('/');
     // XXX: actually, lack of '/' signifies error here
     std::string tbn = (ls==std::string::npos)?tf:tf.substr(ls+1);
     ls = lf.rfind('/');
     std::string lbn = (ls==std::string::npos)?lf:lf.substr(ls+1);
@@ -198,18 +251,34 @@ int eyefiService::UploadPhoto(
         if( (!link(tf.c_str(),ttf.c_str())) && (lf.empty() || !link(lf.c_str(),tlf.c_str())) ) {
             unlink(tf.c_str());
             if(!lf.empty()) unlink(lf.c_str());
             success=true;
             break;
         }
     }
     std::string cmd = eyekinfig.get_on_upload_photo();
-    if(success && !cmd.empty()) {
-        if(detached_child()) {
+    if(success) {
+#ifdef HAVE_SQLITE
+        {
+            iiidb_t D(eyekinfig);
+            D.prepare(
+                    "INSERT INTO photo"
+                    " (ctime,mac,fileid,filename,filesize,filesignature,encryption,flags)"
+                    " VALUES"
+                    " (:ctime,:mac,:fileid,:filename,:filesize,:filesignature,:encryption,:flags)"
+            ).bind(":ctime",time(0))
+             .bind(":mac",macaddress)
+             .bind(":fileid",fileid).bind(":filename",filename)
+             .bind(":filesize",filesize).bind(":filesignature",filesignature)
+             .bind(":encryption",encryption).bind(":flags",flags)
+             .step();
+        }
+#endif /* HAVE_SQLITE */
+        if((!cmd.empty()) && detached_child()) {
             putenv( gnu::autosprintf("EYEFI_UPLOADED_ORIG=%s",tbn.c_str()) );
             putenv( gnu::autosprintf("EYEFI_MACADDRESS=%s",macaddress.c_str()) );
             putenv( gnu::autosprintf("EYEFI_UPLOADED=%s",ttf.c_str()) );
             if(!lf.empty()) putenv( gnu::autosprintf("EYEFI_LOG=%s",tlf.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);