Actual source code: globus.c
petsc-3.6.1 2015-08-06
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
88: /*@C
89: PetscGlobusAuthorize - Get an access token allowing PETSc applications to make Globus file transfer requests
91: Not collective, only the first process in MPI_Comm does anything
93: Input Parameters:
94: + comm - the MPI communicator
95: - tokensize - size of the token array
97: Output Parameters:
98: . access_token - can be used with PetscGlobusUpLoad() for 30 days
100: Notes: This call requires stdout and stdin access from process 0 on the MPI communicator
102: You can run src/sys/webclient/examples/tutorials/globusobtainaccesstoken to get an access token
104: Level: intermediate
106: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten(), PetscGlobusUpload()
108: @*/
109: PetscErrorCode PetscGlobusAuthorize(MPI_Comm comm,char access_token[],size_t tokensize)
110: {
111: SSL_CTX *ctx;
112: SSL *ssl;
113: int sock;
115: char buff[8*1024],*ptr,head[1024];
116: PetscMPIInt rank;
117: size_t len;
118: PetscBool found;
121: MPI_Comm_rank(comm,&rank);
122: if (!rank) {
123: if (!isatty(fileno(PETSC_STDOUT))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Requires users input/output");
124: PetscPrintf(comm,"Enter globus username:");
125: ptr = fgets(buff, 1024, stdin);
126: if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno);
127: PetscStrlen(buff,&len);
128: buff[len-1] = ':'; /* remove carriage return at end of line */
130: PetscPrintf(comm,"Enter globus password:");
131: ptr = fgets(buff+len, 1024-len, stdin);
132: if (!ptr) SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_FILE_READ, "Error reading from stdin: %d", errno);
133: PetscStrlen(buff,&len);
134: buff[len-1] = '\0'; /* remove carriage return at end of line */
135: PetscStrcpy(head,"Authorization: Basic ");
136: base64_encode((const unsigned char*)buff,(unsigned char*)(head+21),sizeof(head)-21);
137: PetscStrcat(head,"\r\n");
139: PetscSSLInitializeContext(&ctx);
140: PetscHTTPSConnect("nexus.api.globusonline.org",443,ctx,&sock,&ssl);
141: PetscHTTPSRequest("GET","nexus.api.globusonline.org/goauth/token?grant_type=client_credentials",head,"application/x-www-form-urlencoded",NULL,ssl,buff,sizeof(buff));
142: PetscSSLDestroyContext(ctx);
143: close(sock);
145: PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
146: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not return access token");
148: PetscPrintf(comm,"Here is your Globus access token, save it in a save place, in the future you can run PETSc\n");
149: PetscPrintf(comm,"programs with the option -globus_access_token %s\n",access_token);
150: PetscPrintf(comm,"to access Globus automatically\n");
151: }
152: return(0);
153: }
158: /*@C
159: PetscGlobusGetTransfers - Get a record of current transfers requested from Globus
161: Not collective, only the first process in MPI_Comm does anything
163: Input Parameters:
164: + comm - the MPI communicator
165: . access_token - Globus access token, if NULL will check in options database for -globus_access_token XXX otherwise
166: will call PetscGlobusAuthorize().
167: - buffsize - size of the buffer
169: Output Parameters:
170: . buff - location to put Globus information
172: Level: intermediate
174: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten(), PetscGlobusUpload(), PetscGlobusAuthorize()
176: @*/
177: PetscErrorCode PetscGlobusGetTransfers(MPI_Comm comm,const char access_token[],char buff[],size_t buffsize)
178: {
179: SSL_CTX *ctx;
180: SSL *ssl;
181: int sock;
183: char head[4096];
184: PetscMPIInt rank;
187: MPI_Comm_rank(comm,&rank);
188: if (!rank) {
189: PetscStrcpy(head,"Authorization : Globus-Goauthtoken ");
190: if (access_token) {
191: PetscStrcat(head,access_token);
192: } else {
193: PetscBool set;
194: char accesstoken[4096];
195: PetscOptionsGetString(NULL,"-globus_access_token",accesstoken,sizeof(accesstoken),&set);
196: if (!set) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Pass in Globus accesstoken or use -globus_access_token XXX");
197: PetscStrcat(head,accesstoken);
198: }
199: PetscStrcat(head,"\r\n");
201: PetscSSLInitializeContext(&ctx);
202: PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
203: PetscHTTPSRequest("GET","transfer.api.globusonline.org/v0.10/tasksummary",head,"application/json",NULL,ssl,buff,buffsize);
204: PetscSSLDestroyContext(ctx);
205: close(sock);
206: }
207: return(0);
208: }
212: /*@C
213: PetscGlobusUpload - Loads a file to Globus
215: Not collective, only the first process in the MPI_Comm uploads the file
217: Input Parameters:
218: + comm - MPI communicator
219: . access_token - obtained with PetscGlobusAuthorize(), pass NULL to use -globus_access_token XXX from the PETSc database
220: - filename - file to upload
222: Options Database:
223: . -globus_access_token XXX
225: Level: intermediate
227: .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveRefresh(), PetscGlobusAuthorize()
229: @*/
230: PetscErrorCode PetscGlobusUpload(MPI_Comm comm,const char access_token[],const char filename[])
231: {
232: SSL_CTX *ctx;
233: SSL *ssl;
234: int sock;
236: char head[4096],buff[8*1024],body[4096],submission_id[4096];
237: PetscMPIInt rank;
238: PetscBool flg,found;
241: MPI_Comm_rank(comm,&rank);
242: if (!rank) {
243: PetscTestFile(filename,'r',&flg);
244: if (!flg) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_FILE_OPEN,"Unable to find file: %s",filename);
246: PetscStrcpy(head,"Authorization : Globus-Goauthtoken ");
247: if (access_token) {
248: PetscStrcat(head,access_token);
249: } else {
250: PetscBool set;
251: char accesstoken[4096];
252: PetscOptionsGetString(NULL,"-globus_access_token",accesstoken,sizeof(accesstoken),&set);
253: if (!set) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_USER,"Pass in Globus accesstoken or use -globus_access_token XXX");
254: PetscStrcat(head,accesstoken);
255: }
256: PetscStrcat(head,"\r\n");
258: /* Get Globus submission id */
259: PetscSSLInitializeContext(&ctx);
260: PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
261: PetscHTTPSRequest("GET","transfer.api.globusonline.org/v0.10/submission_id",head,"application/json",NULL,ssl,buff,sizeof(buff));
262: PetscSSLDestroyContext(ctx);
263: close(sock);
264: PetscPullJSONValue(buff,"value",submission_id,sizeof(submission_id),&found);
265: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not return submission id");
267: /* build JSON body of transfer request */
268: PetscStrcpy(body,"{");
269: PetscPushJSONValue(body,"submission_id",submission_id,sizeof(body)); PetscStrcat(body,",");
270: PetscPushJSONValue(body,"DATA_TYPE","transfer",sizeof(body)); PetscStrcat(body,",");
271: PetscPushJSONValue(body,"sync_level","null",sizeof(body)); PetscStrcat(body,",");
272: PetscPushJSONValue(body,"source_endpoint","barryfsmith#MacBookPro",sizeof(body)); PetscStrcat(body,",");
273: PetscPushJSONValue(body,"label","PETSc transfer label",sizeof(body)); PetscStrcat(body,",");
274: PetscPushJSONValue(body,"length","1",sizeof(body)); PetscStrcat(body,",");
275: PetscPushJSONValue(body,"destination_endpoint","mcs#home",sizeof(body)); PetscStrcat(body,",");
277: PetscStrcat(body,"\"DATA\": [ {");
278: PetscPushJSONValue(body,"source_path","/~/FEM_GPU.pdf",sizeof(body)); PetscStrcat(body,",");
279: PetscPushJSONValue(body,"destination_path","/~/FEM_GPU.pdf",sizeof(body)); PetscStrcat(body,",");
280: PetscPushJSONValue(body,"verify_size","null",sizeof(body)); PetscStrcat(body,",");
281: PetscPushJSONValue(body,"recursive","false",sizeof(body)); PetscStrcat(body,",");
282: PetscPushJSONValue(body,"DATA_TYPE","transfer_item",sizeof(body));
283: PetscStrcat(body,"} ] }");
285: PetscSSLInitializeContext(&ctx);
286: PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
287: PetscHTTPSRequest("POST","transfer.api.globusonline.org/v0.10/transfer",head,"application/json",body,ssl,buff,sizeof(buff));
288: PetscSSLDestroyContext(ctx);
289: close(sock);
290: PetscPullJSONValue(buff,"code",submission_id,sizeof(submission_id),&found);
291: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not return code on transfer");
292: PetscStrcmp(submission_id,"Accepted",&found);
293: if (!found) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_LIB,"Globus did not accept transfer");
294: }
295: return(0);
296: }