Actual source code: globus.c
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;
23: PetscStrlen((const char*)data,&input_length);
24: output_length = 4 * ((input_length + 2) / 3);
27: for (i = 0, j = 0; i < input_length;) {
28: uint32_t octet_a = i < input_length ? (unsigned char)data[i++] : 0;
29: uint32_t octet_b = i < input_length ? (unsigned char)data[i++] : 0;
30: uint32_t octet_c = i < input_length ? (unsigned char)data[i++] : 0;
31: uint32_t triple = (octet_a << 0x10) + (octet_b << 0x08) + octet_c;
33: encoded_data[j++] = encoding_table[(triple >> 3 * 6) & 0x3F];
34: encoded_data[j++] = encoding_table[(triple >> 2 * 6) & 0x3F];
35: encoded_data[j++] = encoding_table[(triple >> 1 * 6) & 0x3F];
36: encoded_data[j++] = encoding_table[(triple >> 0 * 6) & 0x3F];
37: }
38: encoded_data[j] = 0;
39: for (i = 0; i < mod_table[input_length % 3]; i++) encoded_data[output_length - 1 - i] = '=';
40: return 0;
41: }
43: PETSC_UNUSED static PetscErrorCode base64_decode(const unsigned char *data,unsigned char* decoded_data, size_t length)
44: {
45: static char decoding_table[257];
46: static int decode_table_built = 0;
47: size_t i,j;
48: size_t input_length,output_length;
50: if (!decode_table_built) {
51: for (i = 0; i < 64; i++) decoding_table[(unsigned char) encoding_table[i]] = i;
52: decode_table_built = 1;
53: }
55: PetscStrlen((const char*)data,&input_length);
58: output_length = input_length / 4 * 3;
59: if (data[input_length - 1] == '=') (output_length)--;
60: if (data[input_length - 2] == '=') (output_length)--;
63: for (i = 0, j = 0; i < input_length;) {
64: uint32_t sextet_a = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
65: uint32_t sextet_b = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
66: uint32_t sextet_c = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
67: uint32_t sextet_d = data[i] == '=' ? 0 & i++ : decoding_table[(int)data[i++]];
68: uint32_t triple = (sextet_a << 3 * 6) + (sextet_b << 2 * 6) + (sextet_c << 1 * 6) + (sextet_d << 0 * 6);
70: if (j < output_length) decoded_data[j++] = (triple >> 2 * 8) & 0xFF;
71: if (j < output_length) decoded_data[j++] = (triple >> 1 * 8) & 0xFF;
72: if (j < output_length) decoded_data[j++] = (triple >> 0 * 8) & 0xFF;
73: }
74: decoded_data[j] = 0;
75: return 0;
76: }
78: #if defined(PETSC_HAVE_UNISTD_H)
79: #include <unistd.h>
80: #endif
82: /*@C
83: PetscGlobusAuthorize - Get an access token allowing PETSc applications to make Globus file transfer requests
85: Not collective, only the first process in MPI_Comm does anything
87: Input Parameters:
88: + comm - the MPI communicator
89: - tokensize - size of the token array
91: Output Parameters:
92: . access_token - can be used with PetscGlobusUpLoad() for 30 days
94: Notes:
95: This call requires stdout and stdin access from process 0 on the MPI communicator
97: You can run src/sys/webclient/tutorials/globusobtainaccesstoken to get an access token
99: Level: intermediate
101: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten(), PetscGlobusUpload()
103: @*/
104: PetscErrorCode PetscGlobusAuthorize(MPI_Comm comm,char access_token[],size_t tokensize)
105: {
106: SSL_CTX *ctx;
107: SSL *ssl;
108: int sock;
109: char buff[8*1024],*ptr,head[1024];
110: PetscMPIInt rank;
111: size_t len;
112: PetscBool found;
114: MPI_Comm_rank(comm,&rank);
115: if (rank == 0) {
117: PetscPrintf(comm,"Enter globus username:");
118: ptr = fgets(buff, 1024, stdin);
120: PetscStrlen(buff,&len);
121: buff[len-1] = ':'; /* remove carriage return at end of line */
123: PetscPrintf(comm,"Enter globus password:");
124: ptr = fgets(buff+len, 1024-len, stdin);
126: PetscStrlen(buff,&len);
127: buff[len-1] = '\0'; /* remove carriage return at end of line */
128: PetscStrcpy(head,"Authorization: Basic ");
129: base64_encode((const unsigned char*)buff,(unsigned char*)(head+21),sizeof(head)-21);
130: PetscStrcat(head,"\r\n");
132: PetscSSLInitializeContext(&ctx);
133: PetscHTTPSConnect("nexus.api.globusonline.org",443,ctx,&sock,&ssl);
134: PetscHTTPSRequest("GET","nexus.api.globusonline.org/goauth/token?grant_type=client_credentials",head,"application/x-www-form-urlencoded",NULL,ssl,buff,sizeof(buff));
135: PetscSSLDestroyContext(ctx);
136: close(sock);
138: PetscPullJSONValue(buff,"access_token",access_token,tokensize,&found);
141: PetscPrintf(comm,"Here is your Globus access token, save it in a save place, in the future you can run PETSc\n");
142: PetscPrintf(comm,"programs with the option -globus_access_token %s\n",access_token);
143: PetscPrintf(comm,"to access Globus automatically\n");
144: }
145: return 0;
146: }
148: /*@C
149: PetscGlobusGetTransfers - Get a record of current transfers requested from Globus
151: Not collective, only the first process in MPI_Comm does anything
153: Input Parameters:
154: + comm - the MPI communicator
155: . access_token - Globus access token, if NULL will check in options database for -globus_access_token XXX otherwise
156: will call PetscGlobusAuthorize().
157: - buffsize - size of the buffer
159: Output Parameters:
160: . buff - location to put Globus information
162: Level: intermediate
164: .seealso: PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten(), PetscGlobusUpload(), PetscGlobusAuthorize()
166: @*/
167: PetscErrorCode PetscGlobusGetTransfers(MPI_Comm comm,const char access_token[],char buff[],size_t buffsize)
168: {
169: SSL_CTX *ctx;
170: SSL *ssl;
171: int sock;
172: char head[4096];
173: PetscMPIInt rank;
175: MPI_Comm_rank(comm,&rank);
176: if (rank == 0) {
177: PetscStrcpy(head,"Authorization : Globus-Goauthtoken ");
178: if (access_token) {
179: PetscStrcat(head,access_token);
180: } else {
181: PetscBool set;
182: char accesstoken[4096];
183: PetscOptionsGetString(NULL,NULL,"-globus_access_token",accesstoken,sizeof(accesstoken),&set);
185: PetscStrcat(head,accesstoken);
186: }
187: PetscStrcat(head,"\r\n");
189: PetscSSLInitializeContext(&ctx);
190: PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
191: PetscHTTPSRequest("GET","transfer.api.globusonline.org/v0.10/tasksummary",head,"application/json",NULL,ssl,buff,buffsize);
192: PetscSSLDestroyContext(ctx);
193: close(sock);
194: }
195: return 0;
196: }
198: /*@C
199: PetscGlobusUpload - Loads a file to Globus
201: Not collective, only the first process in the MPI_Comm uploads the file
203: Input Parameters:
204: + comm - MPI communicator
205: . access_token - obtained with PetscGlobusAuthorize(), pass NULL to use -globus_access_token XXX from the PETSc database
206: - filename - file to upload
208: Options Database:
209: . -globus_access_token XXX - the Globus token
211: Level: intermediate
213: .seealso: PetscURLShorten(), PetscGoogleDriveAuthorize(), PetscGoogleDriveRefresh(), PetscGlobusAuthorize()
215: @*/
216: PetscErrorCode PetscGlobusUpload(MPI_Comm comm,const char access_token[],const char filename[])
217: {
218: SSL_CTX *ctx;
219: SSL *ssl;
220: int sock;
221: char head[4096],buff[8*1024],body[4096],submission_id[4096];
222: PetscMPIInt rank;
223: PetscBool flg,found;
225: MPI_Comm_rank(comm,&rank);
226: if (rank == 0) {
227: PetscTestFile(filename,'r',&flg);
230: PetscStrcpy(head,"Authorization : Globus-Goauthtoken ");
231: if (access_token) {
232: PetscStrcat(head,access_token);
233: } else {
234: PetscBool set;
235: char accesstoken[4096];
236: PetscOptionsGetString(NULL,NULL,"-globus_access_token",accesstoken,sizeof(accesstoken),&set);
238: PetscStrcat(head,accesstoken);
239: }
240: PetscStrcat(head,"\r\n");
242: /* Get Globus submission id */
243: PetscSSLInitializeContext(&ctx);
244: PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
245: PetscHTTPSRequest("GET","transfer.api.globusonline.org/v0.10/submission_id",head,"application/json",NULL,ssl,buff,sizeof(buff));
246: PetscSSLDestroyContext(ctx);
247: close(sock);
248: PetscPullJSONValue(buff,"value",submission_id,sizeof(submission_id),&found);
251: /* build JSON body of transfer request */
252: PetscStrcpy(body,"{");
253: PetscPushJSONValue(body,"submission_id",submission_id,sizeof(body))); PetscCall(PetscStrcat(body,",");
254: PetscPushJSONValue(body,"DATA_TYPE","transfer",sizeof(body))); PetscCall(PetscStrcat(body,",");
255: PetscPushJSONValue(body,"sync_level","null",sizeof(body))); PetscCall(PetscStrcat(body,",");
256: PetscPushJSONValue(body,"source_endpoint","barryfsmith#MacBookPro",sizeof(body))); PetscCall(PetscStrcat(body,",");
257: PetscPushJSONValue(body,"label","PETSc transfer label",sizeof(body))); PetscCall(PetscStrcat(body,",");
258: PetscPushJSONValue(body,"length","1",sizeof(body))); PetscCall(PetscStrcat(body,",");
259: PetscPushJSONValue(body,"destination_endpoint","mcs#home",sizeof(body))); PetscCall(PetscStrcat(body,",");
261: PetscStrcat(body,"\"DATA\": [ {");
262: PetscPushJSONValue(body,"source_path","/~/FEM_GPU.pdf",sizeof(body))); PetscCall(PetscStrcat(body,",");
263: PetscPushJSONValue(body,"destination_path","/~/FEM_GPU.pdf",sizeof(body))); PetscCall(PetscStrcat(body,",");
264: PetscPushJSONValue(body,"verify_size","null",sizeof(body))); PetscCall(PetscStrcat(body,",");
265: PetscPushJSONValue(body,"recursive","false",sizeof(body))); PetscCall(PetscStrcat(body,",");
266: PetscPushJSONValue(body,"DATA_TYPE","transfer_item",sizeof(body));
267: PetscStrcat(body,"} ] }");
269: PetscSSLInitializeContext(&ctx);
270: PetscHTTPSConnect("transfer.api.globusonline.org",443,ctx,&sock,&ssl);
271: PetscHTTPSRequest("POST","transfer.api.globusonline.org/v0.10/transfer",head,"application/json",body,ssl,buff,sizeof(buff));
272: PetscSSLDestroyContext(ctx);
273: close(sock);
274: PetscPullJSONValue(buff,"code",submission_id,sizeof(submission_id),&found);
276: PetscStrcmp(submission_id,"Accepted",&found);
278: }
279: return 0;
280: }