Actual source code: globus.c

petsc-3.8.4 2018-03-24
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  1:  #include <petscwebclient.h>
  2: #pragma clang diagnostic ignored "-Wdeprecated-declarations"
  3: #pragma gcc diagnostic ignored "-Wdeprecated-declarations"

  5: /*
  6:     Encodes and decodes from MIME Base64
  7: */
  8: static char encoding_table[] = {'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
  9:                                 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
 10:                                 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
 11:                                 'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
 12:                                 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
 13:                                 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
 14:                                 'w', 'x', 'y', 'z', '0', '1', '2', '3',
 15:                                 '4', '5', '6', '7', '8', '9', '+', '/'};

 17: static PetscErrorCode base64_encode(const unsigned char *data,unsigned char *encoded_data,size_t len)
 18: {
 19:   static size_t  mod_table[] = {0, 2, 1};
 20:   size_t         i,j;
 21:   size_t         input_length,output_length;

 25:   PetscStrlen((const char*)data,&input_length);
 26:   output_length = 4 * ((input_length + 2) / 3);
 27:   if (output_length > len) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Output length not large enough");

 29:   for (i = 0, j = 0; i < input_length;) {
 30:      uint32_t octet_a = i < input_length ? (unsigned char)data[i++] : 0;
 31:      uint32_t octet_b = i < input_length ? (unsigned char)data[i++] : 0;
 32:      uint32_t octet_c = i < input_length ? (unsigned char)data[i++] : 0;
 33:      uint32_t triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;

 35:      encoded_data[j++] = encoding_table[(triple >> 3 * 6) & 0x3F];
 36:      encoded_data[j++] = encoding_table[(triple >> 2 * 6) & 0x3F];
 37:      encoded_data[j++] = encoding_table[(triple >> 1 * 6) & 0x3F];
 38:      encoded_data[j++] = encoding_table[(triple >> 0 * 6) & 0x3F];
 39:   }
 40:   encoded_data[j] = 0;
 41:   for (i = 0; i < mod_table[input_length % 3]; i++) encoded_data[output_length - 1 - i] = '=';
 42:   return(0);
 43: }

 45: PETSC_UNUSED static PetscErrorCode base64_decode(const unsigned char *data,unsigned char* decoded_data, size_t length)
 46: {
 47:   static char    decoding_table[257];
 48:   static int     decode_table_built = 0;
 49:   size_t         i,j;
 51:   size_t         input_length,output_length;

 54:   if (!decode_table_built) {
 55:     for (i = 0; i < 64; i++) decoding_table[(unsigned char) encoding_table[i]] = i;
 56:     decode_table_built = 1;
 57:   }

 59:   PetscStrlen((const char*)data,&input_length);
 60:   if (input_length % 4 != 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Input length must be divisible by 4");

 62:   output_length = input_length / 4 * 3;
 63:   if (data[input_length - 1] == '=') (output_length)--;
 64:   if (data[input_length - 2] == '=') (output_length)--;
 65:   if (output_length > length) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONG,"Output length too shore");

 67:   for (i = 0, j = 0; i < input_length;) {
 68:     uint32_t sextet_a = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
 69:     uint32_t sextet_b = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
 70:     uint32_t sextet_c = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
 71:     uint32_t sextet_d = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
 72:     uint32_t triple = (sextet_a << 3 * 6) + (sextet_b << 2 * 6) + (sextet_c << 1 * 6) + (sextet_d << 0 * 6);

 74:     if (j < output_length) decoded_data[j++] = (triple >> 2 * 8) & 0xFF;
 75:     if (j < output_length) decoded_data[j++] = (triple >> 1 * 8) & 0xFF;
 76:     if (j < output_length) decoded_data[j++] = (triple >> 0 * 8) & 0xFF;
 77:   }
 78:   decoded_data[j] = 0;
 79:   return(0);
 80: }

 82: #if defined(PETSC_HAVE_UNISTD_H)
 83: #include <unistd.h>
 84: #endif

 86: /*@C
 87:      PetscGlobusAuthorize - Get an access token allowing PETSc applications to make Globus file transfer requests

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

 91:    Input Parameters:
 92: +  comm - the MPI communicator
 93: -  tokensize - size of the token array

 95:    Output Parameters:
 96: .  access_token - can be used with PetscGlobusUpLoad() for 30 days

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

100:    You can run src/sys/webclient/examples/tutorials/globusobtainaccesstoken to get an access token

102:    Level: intermediate

104: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten(), PetscGlobusUpload()

106: @*/
107: PetscErrorCode PetscGlobusAuthorize(MPI_Comm comm,char access_token[],size_t tokensize)
108: {
109:   SSL_CTX        *ctx;
110:   SSL            *ssl;
111:   int            sock;
113:   char           buff[8*1024],*ptr,head[1024];
114:   PetscMPIInt    rank;
115:   size_t         len;
116:   PetscBool      found;

119:   MPI_Comm_rank(comm,&rank);
120:   if (!rank) {
121:     if (!isatty(fileno(PETSC_STDOUT))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Requires users input/output");
122:     PetscPrintf(comm,"Enter globus username:");
123:     ptr  = fgets(buff, 1024, stdin);
124:     if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno);
125:     PetscStrlen(buff,&len);
126:     buff[len-1] = ':'; /* remove carriage return at end of line */

128:     PetscPrintf(comm,"Enter globus password:");
129:     ptr  = fgets(buff+len, 1024-len, stdin);
130:     if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno);
131:     PetscStrlen(buff,&len);
132:     buff[len-1] = '\0'; /* remove carriage return at end of line */
133:     PetscStrcpy(head,"Authorization: Basic ");
134:     base64_encode((const unsigned char*)buff,(unsigned char*)(head+21),sizeof(head)-21);
135:     PetscStrcat(head,"\r\n");

137:     PetscSSLInitializeContext(&ctx);
138:     PetscHTTPSConnect("nexus.api.globusonline.org",443,ctx,&sock,&ssl);
139:     PetscHTTPSRequest("GET","nexus.api.globusonline.org/goauth/token?grant_type=client_credentials",head,"application/x-www-form-urlencoded",NULL,ssl,buff,sizeof(buff));
140:     PetscSSLDestroyContext(ctx);
141:     close(sock);

143:     PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
144:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not return access token");

146:     PetscPrintf(comm,"Here is your Globus access token, save it in a save place, in the future you can run PETSc\n");
147:     PetscPrintf(comm,"programs with the option -globus_access_token %s\n",access_token);
148:     PetscPrintf(comm,"to access Globus automatically\n");
149:   }
150:   return(0);
151: }


154: /*@C
155:      PetscGlobusGetTransfers - Get a record of current transfers requested from Globus

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

159:    Input Parameters:
160: +  comm - the MPI communicator
161: .  access_token - Globus access token, if NULL will check in options database for -globus_access_token XXX otherwise
162:                   will call PetscGlobusAuthorize().
163: -  buffsize - size of the buffer

165:    Output Parameters:
166: .  buff - location to put Globus information

168:    Level: intermediate

170: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten(), PetscGlobusUpload(), PetscGlobusAuthorize()

172: @*/
173: PetscErrorCode PetscGlobusGetTransfers(MPI_Comm comm,const char access_token[],char buff[],size_t buffsize)
174: {
175:   SSL_CTX        *ctx;
176:   SSL            *ssl;
177:   int            sock;
179:   char           head[4096];
180:   PetscMPIInt    rank;

183:   MPI_Comm_rank(comm,&rank);
184:   if (!rank) {
185:     PetscStrcpy(head,"Authorization : Globus-Goauthtoken ");
186:     if (access_token) {
187:       PetscStrcat(head,access_token);
188:     } else {
189:       PetscBool set;
190:       char      accesstoken[4096];
191:       PetscOptionsGetString(NULL,NULL,"-globus_access_token",accesstoken,sizeof(accesstoken),&set);
192:       if (!set) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Pass in Globus accesstoken or use -globus_access_token XXX");
193:       PetscStrcat(head,accesstoken);
194:     }
195:     PetscStrcat(head,"\r\n");

197:     PetscSSLInitializeContext(&ctx);
198:     PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
199:     PetscHTTPSRequest("GET","transfer.api.globusonline.org/v0.10/tasksummary",head,"application/json",NULL,ssl,buff,buffsize);
200:     PetscSSLDestroyContext(ctx);
201:     close(sock);
202:   }
203:   return(0);
204: }

206: /*@C
207:      PetscGlobusUpload - Loads a file to Globus

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

211:   Input Parameters:
212: +   comm - MPI communicator
213: .   access_token - obtained with PetscGlobusAuthorize(), pass NULL to use -globus_access_token XXX from the PETSc database
214: -   filename - file to upload

216:   Options Database:
217: .  -globus_access_token   XXX

219:    Level: intermediate

221: .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveRefresh(), PetscGlobusAuthorize()

223: @*/
224: PetscErrorCode PetscGlobusUpload(MPI_Comm comm,const char access_token[],const char filename[])
225: {
226:   SSL_CTX        *ctx;
227:   SSL            *ssl;
228:   int            sock;
230:   char           head[4096],buff[8*1024],body[4096],submission_id[4096];
231:   PetscMPIInt    rank;
232:   PetscBool      flg,found;

235:   MPI_Comm_rank(comm,&rank);
236:   if (!rank) {
237:     PetscTestFile(filename,'r',&flg);
238:     if (!flg) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to find file: %s",filename);

240:     PetscStrcpy(head,"Authorization : Globus-Goauthtoken ");
241:     if (access_token) {
242:       PetscStrcat(head,access_token);
243:     } else {
244:       PetscBool set;
245:       char      accesstoken[4096];
246:       PetscOptionsGetString(NULL,NULL,"-globus_access_token",accesstoken,sizeof(accesstoken),&set);
247:       if (!set) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Pass in Globus accesstoken or use -globus_access_token XXX");
248:       PetscStrcat(head,accesstoken);
249:     }
250:     PetscStrcat(head,"\r\n");

252:     /* Get Globus submission id */
253:     PetscSSLInitializeContext(&ctx);
254:     PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
255:     PetscHTTPSRequest("GET","transfer.api.globusonline.org/v0.10/submission_id",head,"application/json",NULL,ssl,buff,sizeof(buff));
256:     PetscSSLDestroyContext(ctx);
257:     close(sock);
258:     PetscPullJSONValue(buff,"value",submission_id,sizeof(submission_id),&found);
259:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not return submission id");

261:     /* build JSON body of transfer request */
262:     PetscStrcpy(body,"{");
263:     PetscPushJSONValue(body,"submission_id",submission_id,sizeof(body));                 PetscStrcat(body,",");
264:     PetscPushJSONValue(body,"DATA_TYPE","transfer",sizeof(body));                        PetscStrcat(body,",");
265:     PetscPushJSONValue(body,"sync_level","null",sizeof(body));                           PetscStrcat(body,",");
266:     PetscPushJSONValue(body,"source_endpoint","barryfsmith#MacBookPro",sizeof(body));    PetscStrcat(body,",");
267:     PetscPushJSONValue(body,"label","PETSc transfer label",sizeof(body));                PetscStrcat(body,",");
268:     PetscPushJSONValue(body,"length","1",sizeof(body));                                  PetscStrcat(body,",");
269:     PetscPushJSONValue(body,"destination_endpoint","mcs#home",sizeof(body));             PetscStrcat(body,",");

271:     PetscStrcat(body,"\"DATA\": [ {");
272:     PetscPushJSONValue(body,"source_path","/~/FEM_GPU.pdf",sizeof(body));                PetscStrcat(body,",");
273:     PetscPushJSONValue(body,"destination_path","/~/FEM_GPU.pdf",sizeof(body));           PetscStrcat(body,",");
274:     PetscPushJSONValue(body,"verify_size","null",sizeof(body));                          PetscStrcat(body,",");
275:     PetscPushJSONValue(body,"recursive","false",sizeof(body));                           PetscStrcat(body,",");
276:     PetscPushJSONValue(body,"DATA_TYPE","transfer_item",sizeof(body));
277:     PetscStrcat(body,"} ] }");

279:     PetscSSLInitializeContext(&ctx);
280:     PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
281:     PetscHTTPSRequest("POST","transfer.api.globusonline.org/v0.10/transfer",head,"application/json",body,ssl,buff,sizeof(buff));
282:     PetscSSLDestroyContext(ctx);
283:     close(sock);
284:     PetscPullJSONValue(buff,"code",submission_id,sizeof(submission_id),&found);
285:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not return code on transfer");
286:     PetscStrcmp(submission_id,"Accepted",&found);
287:     if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not accept transfer");
288:   }
289:   return(0);
290: }