Date: 2016-07-24T16:48:53+00:00

Actual source code: box.c
petsc-3.7.3 2016-07-24
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      2: #include <petscwebclient.h>
      3: #pragma clang diagnostic ignored "-Wdeprecated-declarations"
      4: #pragma gcc diagnostic ignored "-Wdeprecated-declarations"

      6: /*
      7:    These variables identify the code as a PETSc application to Box.

      9:    See -   http://stackoverflow.com/questions/4616553/using-oauth-in-free-open-source-software
     10:    Users can get their own application IDs - goto https://developers.box.com

     12: */
     13: #define PETSC_BOX_CLIENT_ID  "sse42nygt4zqgrdwi0luv79q1u1f0xza"
     14: #define PETSC_BOX_CLIENT_ST  "A0Dy4KgOYLB2JIYZqpbze4EzjeIiX5k4"

     16: #if defined(PETSC_HAVE_SAWS)
     17: #include <mongoose.h>

     19: static volatile char *result = NULL;

     21: static int PetscBoxWebServer_Private(struct mg_connection *conn)
     22: {
     23:   const struct mg_request_info *request_info = mg_get_request_info(conn);
     24:   result = (char*) request_info->query_string;
     25:   return 1;  /* Mongoose will now not handle the request */
     26: }

     28: /*
     29:     Box can only return an authorization code to a Webserver, hence we need to start one up and wait for
     30:     the authorization code to arrive from Box
     31: */
     32: static PetscErrorCode PetscBoxStartWebServer_Private(void)
     33: {
     34:   PetscErrorCode      ierr;
     35:   int                 optionsLen = 5;
     36:   const char          *options[optionsLen];
     37:   struct mg_callbacks callbacks;
     38:   struct mg_context   *ctx;
     39:   char                keyfile[PETSC_MAX_PATH_LEN];
     40:   PetscBool           exists;

     43:   options[0] = "listening_ports";
     44:   options[1] = "8081s";

     46:   PetscStrcpy(keyfile,"sslclient.pem");
     47:   PetscTestFile(keyfile,'r',&exists);
     48:   if (!exists) {
     49:     PetscGetHomeDirectory(keyfile,PETSC_MAX_PATH_LEN);
     50:     PetscStrcat(keyfile,"/");
     51:     PetscStrcat(keyfile,"sslclient.pem");
     52:     PetscTestFile(keyfile,'r',&exists);
     53:     if (!exists) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to locate sslclient.pem file in current directory or home directory");
     54:   }

     56:   options[2] = "ssl_certificate";
     57:   options[3] = keyfile;
     58:   options[4] = NULL;

     60:   /* Prepare callbacks structure. We have only one callback, the rest are NULL. */
     61:   PetscMemzero(&callbacks, sizeof(callbacks));
     62:   callbacks.begin_request = PetscBoxWebServer_Private;
     63:   ctx = mg_start(&callbacks, NULL, options);
     64:   if (!ctx) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Unable to start up webserver");
     65:   while (!result) {};
     66:   return(0);
     67: }

     69: #if defined(PETSC_HAVE_UNISTD_H)
     70: #include <unistd.h>
     71: #endif

     75: /*@C
     76:      PetscBoxAuthorize - Get authorization and refresh token for accessing Box drive from PETSc

     78:    Not collective, only the first process in MPI_Comm does anything

     80:    Input Parameters:
     81: +  comm - the MPI communicator
     82: -  tokensize - size of the token arrays

     84:    Output Parameters:
     85: +  access_token - can be used with PetscBoxUpload() for this one session
     86: -  refresh_token - can be used for ever to obtain new access_tokens with PetscBoxRefresh(), guard this like a password
     87:                    it gives access to your Box Drive

     89:    Notes: This call requires stdout and stdin access from process 0 on the MPI communicator

     91:    You can run src/sys/webclient/examples/tutorials/boxobtainrefreshtoken to get a refresh token and then in the future pass it to
     92:    PETSc programs with -box_refresh_token XXX

     94:    This requires PETSc be installed using --with-saws or --download-saws

     96:    Requires the user have created a self-signed ssl certificate with

     98: $    saws/CA.pl  -newcert  (using the passphrase of password)
     99: $    cat newkey.pem newcert.pem > sslclient.pem

    101:     and put the resulting file in either the current directory (with the application) or in the home directory. This seems kind of
    102:     silly but it was all I could figure out.

    104:    Level: intermediate

    106: .seealso: PetscBoxRefresh(), PetscBoxUpload(), PetscURLShorten()

    108: @*/
    109: PetscErrorCode PetscBoxAuthorize(MPI_Comm comm,char access_token[],char refresh_token[],size_t tokensize)
    110: {
    111:   SSL_CTX        *ctx;
    112:   SSL            *ssl;
    113:   int            sock;
    115:   char           buff[8*1024],body[1024];
    116:   PetscMPIInt    rank;
    117:   PetscBool      flg,found;

    120:   MPI_Comm_rank(comm,&rank);
    121:   if (!rank) {
    122:     if (!isatty(fileno(PETSC_STDOUT))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Requires users input/output");
    123:     PetscPrintf(comm,"Cut and paste the following into your browser:\n\n"
    124:                             "https://www.box.com/api/oauth2/authorize?"
    125:                             "response_type=code&"
    126:                             "client_id="
    127:                             PETSC_BOX_CLIENT_ID
    128:                             "&state=PETScState"
    129:                             "\n\n");
    130:     PetscBoxStartWebServer_Private();
    131:     PetscStrbeginswith((const char*)result,"state=PETScState&code=",&flg);
    132:     if (!flg) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Did not get expected string from Box got %s",result);
    133:     PetscStrncpy(buff,(const char*)result+22,sizeof(buff));

    135:     PetscSSLInitializeContext(&ctx);
    136:     PetscHTTPSConnect("www.box.com",443,ctx,&sock,&ssl);
    137:     PetscStrcpy(body,"code=");
    138:     PetscStrcat(body,buff);
    139:     PetscStrcat(body,"&client_id=");
    140:     PetscStrcat(body,PETSC_BOX_CLIENT_ID);
    141:     PetscStrcat(body,"&client_secret=");
    142:     PetscStrcat(body,PETSC_BOX_CLIENT_ST);
    143:     PetscStrcat(body,"&grant_type=authorization_code");

    145:     PetscHTTPSRequest("POST","www.box.com/api/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));
    146:     PetscSSLDestroyContext(ctx);
    147:     close(sock);

    149:     PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
    150:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Box did not return access token");
    151:     PetscPullJSONValue(buff,"refresh_token",refresh_token,tokensize,&found);
    152:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Box did not return refresh token");

    154:     PetscPrintf(comm,"Here is your Box refresh token, save it in a save place, in the future you can run PETSc\n");
    155:     PetscPrintf(comm,"programs with the option -box_refresh_token %s\n",refresh_token);
    156:     PetscPrintf(comm,"to access Box Drive automatically\n");
    157:   }
    158:   return(0);
    159: }
    160: #endif

    164: /*@C
    165:      PetscBoxRefresh - Get a new authorization token for accessing Box drive from PETSc from a refresh token

    167:    Not collective, only the first process in the MPI_Comm does anything

    169:    Input Parameters:
    170: +   comm - MPI communicator
    171: .   refresh token - obtained with PetscBoxAuthorize(), if NULL PETSc will first look for one in the options data
    172:                     if not found it will call PetscBoxAuthorize()
    173: -   tokensize - size of the output string access_token

    175:    Output Parameter:
    176: +   access_token - token that can be passed to PetscBoxUpload()
    177: -   new_refresh_token - the old refresh token is no longer valid, not this is different than Google where the same refresh_token is used forever

    179:    Level: intermediate

    181: .seealso: PetscURLShorten(), PetscBoxAuthorize(), PetscBoxUpload()

    183: @*/
    184: PetscErrorCode PetscBoxRefresh(MPI_Comm comm,const char refresh_token[],char access_token[],char new_refresh_token[],size_t tokensize)
    185: {
    186:   SSL_CTX        *ctx;
    187:   SSL            *ssl;
    188:   int            sock;
    190:   char           buff[8*1024],body[1024];
    191:   PetscMPIInt    rank;
    192:   char           *refreshtoken = (char*)refresh_token;
    193:   PetscBool      found;

    196:   MPI_Comm_rank(comm,&rank);
    197:   if (!rank) {
    198:     if (!refresh_token) {
    199:       PetscBool set;
    200:       PetscMalloc1(512,&refreshtoken);
    201:       PetscOptionsGetString(NULL,NULL,"-box_refresh_token",refreshtoken,512,&set);
    202: #if defined(PETSC_HAVE_SAWS)
    203:       if (!set) {
    204:         PetscBoxAuthorize(comm,access_token,new_refresh_token,512*sizeof(char));
    205:         PetscFree(refreshtoken);
    206:         return(0);
    207:       }
    208: #else
    209:       if (!set) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Must provide refresh token with -box_refresh_token XXX");
    210: #endif
    211:     }
    212:     PetscSSLInitializeContext(&ctx);
    213:     PetscHTTPSConnect("www.box.com",443,ctx,&sock,&ssl);
    214:     PetscStrcpy(body,"client_id=");
    215:     PetscStrcat(body,PETSC_BOX_CLIENT_ID);
    216:     PetscStrcat(body,"&client_secret=");
    217:     PetscStrcat(body,PETSC_BOX_CLIENT_ST);
    218:     PetscStrcat(body,"&refresh_token=");
    219:     PetscStrcat(body,refreshtoken);
    220:     if (!refresh_token) {PetscFree(refreshtoken);}
    221:     PetscStrcat(body,"&grant_type=refresh_token");

    223:     PetscHTTPSRequest("POST","www.box.com/api/oauth2/token",NULL,"application/x-www-form-urlencoded",body,ssl,buff,sizeof(buff));
    224:     PetscSSLDestroyContext(ctx);
    225:     close(sock);

    227:     PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
    228:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Box did not return access token");
    229:     PetscPullJSONValue(buff,"refresh_token",new_refresh_token,tokensize,&found);
    230:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Box did not return refresh token");

    232:     PetscPrintf(comm,"Here is your new Box refresh token, save it in a save place, in the future you can run PETSc\n");
    233:     PetscPrintf(comm,"programs with the option -box_refresh_token %s\n",new_refresh_token);
    234:     PetscPrintf(comm,"to access Box Drive automatically\n");
    235:   }
    236:   return(0);
    237: }

    239: #include <sys/stat.h>

    243: /*@C
    244:      PetscBoxUpload - Loads a file to the Box Drive

    246:      This routine has not yet been written; it is just copied from Google Drive

    248:      Not collective, only the first process in the MPI_Comm uploads the file

    250:   Input Parameters:
    251: +   comm - MPI communicator
    252: .   access_token - obtained with PetscBoxRefresh(), pass NULL to have PETSc generate one
    253: -   filename - file to upload; if you upload multiple times it will have different names each time on Box Drive

    255:   Options Database:
    256: .  -box_refresh_token   XXX

    258:   Usage Patterns:
    259:     With PETSc option -box_refresh_token  XXX given
    260:     PetscBoxUpload(comm,NULL,filename);        will upload file with no user interaction

    262:     Without PETSc option -box_refresh_token XXX given
    263:     PetscBoxUpload(comm,NULL,filename);        for first use will prompt user to authorize access to Box Drive with their processor

    265:     With PETSc option -box_refresh_token  XXX given
    266:     PetscBoxRefresh(comm,NULL,access_token,sizeof(access_token));
    267:     PetscBoxUpload(comm,access_token,filename);

    269:     With refresh token entered in some way by the user
    270:     PetscBoxRefresh(comm,refresh_token,access_token,sizeof(access_token));
    271:     PetscBoxUpload(comm,access_token,filename);

    273:     PetscBoxAuthorize(comm,access_token,refresh_token,sizeof(access_token));
    274:     PetscBoxUpload(comm,access_token,filename);

    276:    Level: intermediate

    278: .seealso: PetscURLShorten(), PetscBoxAuthorize(), PetscBoxRefresh()

    280: @*/
    281: PetscErrorCode PetscBoxUpload(MPI_Comm comm,const char access_token[],const char filename[])
    282: {
    283:   SSL_CTX        *ctx;
    284:   SSL            *ssl;
    285:   int            sock;
    287:   char           head[1024],buff[8*1024],*body,*title;
    288:   PetscMPIInt    rank;
    289:   struct stat    sb;
    290:   size_t         len,blen,rd;
    291:   FILE           *fd;

    294:   MPI_Comm_rank(comm,&rank);
    295:   if (!rank) {
    296:     PetscStrcpy(head,"Authorization: Bearer ");
    297:     PetscStrcat(head,access_token);
    298:     PetscStrcat(head,"\r\n");
    299:     PetscStrcat(head,"uploadType: multipart\r\n");

    301:     stat(filename,&sb);
    302:     if (ierr) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to stat file: %s",filename);
    303:     len = 1024 + sb.st_size;
    304:     PetscMalloc1(len,&body);
    305:     PetscStrcpy(body,"--foo_bar_baz\r\n"
    306:                             "Content-Type: application/json\r\n\r\n"
    307:                             "{");
    308:     PetscPushJSONValue(body,"title",filename,len);
    309:     PetscStrcat(body,",");
    310:     PetscPushJSONValue(body,"mimeType","text.html",len);
    311:     PetscStrcat(body,",");
    312:     PetscPushJSONValue(body,"description","a file",len);
    313:     PetscStrcat(body, "}\r\n\r\n"
    314:                              "--foo_bar_baz\r\n"
    315:                              "Content-Type: text/html\r\n\r\n");
    316:     PetscStrlen(body,&blen);
    317:     fd = fopen (filename, "r");
    318:     if (!fd) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to open file: %s",filename);
    319:     rd = fread (body+blen, sizeof (unsigned char), sb.st_size, fd);
    320:     if (rd != (size_t)sb.st_size) SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to read entire file: %s %d %d",filename,(int)rd,(int)sb.st_size);
    321:     fclose(fd);
    322:     body[blen + rd] = 0;
    323:     PetscStrcat(body,"\r\n\r\n"
    324:                             "--foo_bar_baz\r\n");
    325:     PetscSSLInitializeContext(&ctx);
    326:     PetscHTTPSConnect("www.boxapis.com",443,ctx,&sock,&ssl);
    327:     PetscHTTPSRequest("POST","www.boxapis.com/upload/drive/v2/files/",head,"multipart/related; boundary=\"foo_bar_baz\"",body,ssl,buff,sizeof(buff));
    328:     PetscFree(body);
    329:     PetscSSLDestroyContext(ctx);
    330:     close(sock);
    331:     PetscStrstr(buff,"\"title\"",&title);
    332:     if (!title) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_LIB,"Upload of file %s failed",filename);
    333:   }
    334:   return(0);
    335: }